Second-hand microscopes and accessories et cetera

- - SECOND-HAND
  - MICROSCOPES AND ACCESSORIES
  - ET CETERA.
  - Offered subject to being previously unsold.
  - ' * MAY, 1938.
  - Circuit Stage Van Heurck Microscope.
  - W. WATSON & SONS, LTD.
  - Microscope and Scientific Instrument Manufacturers
  - 313, High Holborn, LONDON, W.C.i
  - Telegrams: “Optics, Holb., London.” Telephone: Holborn 2767.
- Page de titre 1 - vue 1/24
- - ALAIN BRIEUX
  - MICROSCOPES
  - l s. d.
  - Grand Model Van Heurck Microscope, by W. Watson & Sons,
  - Ltd., with :—
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Interchangeable monocular and Wenham binocular bodies, the monocular body being fitted with double draw-tubes, one having rackwork adjustment.
  - Mechanical stage fitted with mm. scale and reading by vernier to o.i mm., sliding bar to mechanical stage, rotation to stage fully divided to degrees, having rotary motion by hand and by rack and pinion, centring screws to stage, clamp to centring motion of stage.
  - Compound substage with rackwork focussing and fine adjustment to focussing of the substage, best centring motions on dovetail bearings, rackwork rotation to substage.
  - Plane and concave mirrors.
  - Rough plate to mechanical stage for protection of movements when liquid preparations, etc., are examined.
  - Eyepieces, Holoscopic series, one pair X 7, best 1.27 capped.
  - One student size, Holoscopic series, x 10.
  - Adapter between student size eyepiece and 1.27" diameter eyepiece.
  - Objectives, Holoscopic, x\", 16-mm. N.A. 0.45.
  - 6a objective, by E. Leitz, Wetzler (fluorite series).
  - Holoscopic, 2-mm. N.A. 1.37.
  - All corrected for 250-mm. tube length.
  - Funnel stop for 2-mm. Holoscopic objective.
  - Universal condenser, N.A. 1, achromatised, in sub stage mounting, with iris diaphragm and stop-carrier, with box of stops.
  - Triple nose-piece, by C. Baker.
  - Best mahogany cabinet, with carrying handles on side of case and fitted with inner mahogany case carrying objectives and accessories.
  - Price . . . . . . . . . . . . . . . . . . . . 80 0 0
  - The outfit is an exceptionally fine one and in perfect condition.
  - Grand Model Van Heurck Microscope, by W. Watson & Sons, Ltd., with :—
  - Interchangeable monocular and Wenham binocular bodies. The monocular body has rackwork and sliding draw-tubes, and with nose-piece tube length from 160 mm. upwards is obtainable.
  - The Wenham binocular body is fitted with interchangeable low-power and high-power Wenham prisms ; it is also provided with a Nicol prism removable by sliding from the optic axis. Rack-work draw-tubes control the interpupillary adjustment. Rackwork coarse adjustment to body.
  - Males-Watson two-speed fine adjustment, giving motions of 250 and 70 for a complete rotation of the milled heads. Mechanical stage with complete rotation, fitted with double sliding-bar, the upper sliding-bar being divided to accommodate various sizes of slides. The movement of the mechanical stage also is fitted with scales and reads by verniers. The rackwork to the stage is fitted with rackwork fully divided and reading by pointer. There are centring screws to the rotation and clamps to the centring.
  - Interchangeable plain plate for mechanical stage for rough work. The substage is provided with rackwork rotation, centring screws, condenser mount having iris diaphragm and rackwork motion to the iris diaphragm.
  - The controlling milled heads of the substage are mounted above the level of the stage practically in the same plane as the controlling milled heads of the mechanical movement of the stage.
  - M 0 X , V\(^4^
- p.2 - vue 2/24
- - MICROSCOPES— (contd.)
  - Grand Model Van Heurck Microscope—continued.
  - In addition there is the interchangeable rackwork substage fitted with complete Swift petrological and ordinary achromatic condensers having sector diaphragm, two revolving selenite holders, four colour-filter holders ; it is fitted with centring screws. Large-size plane and concave mirrors.
  - In order to make the instrument portable the tripod foot on which it is mounted is provided with two hinged legs, but in spite of this it is as rigid as the fixed pattern.
  - Eyepieces, Achromatised, one pair “ B.”
  - One pair Zeiss compensating X 12.
  - Objectives, Zeiss Apochromatic 24-mm., 0.30 N.A., 250-mm. tube length.
  - Zeiss 4-mm. 0.95 N.A., with correction collar. Powell & Lealand 1 /8" with correction collar, dry and immersion fronts.
  - Powell & Lealand 1/12" oil-immersion, with correction collar.
  - One colour-filter holder.
  - Powell & Lealand oil-immersion condenser.
  - Watson Universal achro-aplanatic condenser.
  - Bull’s-eye stand condenser.
  - Bull’s-eye condenser, mounted for fitting to limb.
  - One pair stage forceps.
  - One silver side reflector.
  - Travis expanding stop.
  - Set of stops for Powell & Lealand immersion condenser.
  - Double nose-piece, by C. Baker.
  - Two compressors.
  - Set of dark-ground stops for Universal condenser.
  - Set of selenites, dark-ground stops, for Swift condenser.
  - Drawing prism to fit on to eyepiece.
  - The whole, complete in polished mahogany case with carrying handle, lock and key. Price
  - The is unique and represents the ideal equipment for any amateur microscopist ; it could be adapted to any form of microscopical work.
  - Circuit Stage Van Heurck Microscope, by W. Watson Sons, Ltd., with :—
  - Interchangeable monocular and Wenham binocular bodies, the monocular body having two draw-tubes, one with rackwork adjustment and the other sliding ; the binocular body being fitted with rackwork adjustment for interpupillary distance.
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Built-in mechanical stage, having rotation through 360°, movements, i-|-"xi|", sliding bar.
  - Rackwork focussing substage with centring screws, fine adjustment focussing motion.
  - Plane and concave mirrors.
  - Tripod foot.
  - One pair eyepieces B X 6.
  - One pair eyepieces C X 8.
  - One eyepiece E x 12, best capped pattern.
  - Objectives, 16-mm. Holoscopic, N.A. 0.45.
  - 12-mm. Holoscopic, N.A. 0.65.
  - 4-mm. Holoscopic, N.A. 0.95.
  - 2-mm. oil-immersion objective, Homogeneous immersion, N.A. 1.25.
  - All objectives corrected for 250-mm. tube length.
  - ( 3 )
  - £ s. d.
  - 75 0 0
- p.3 - vue 3/24
- - MICROSCOPES—(contd.)
  - Circuit Stage Van Heurck Microscope— continued.
  - Dustproof triple nose-piece.
  - Abbe illuminator in substage mount, with iris diaphragm and stop-carrier.
  - Box of dark-ground and oblique-light stops.
  - Live box.
  - The outfit complete in polished mahogany dust-tight case.
  - Price
  - Grand Model Van Heurck Microscope, by W. Watson cS-Sons, Ltd,.,
  - with : —
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Monocular body with rackwork and plain draw-tubes. Interchangeable Wenham binocular body.
  - Dustproof triple nose-piece.
  - Built-in mechanical stage, with complete rotation, rackwork to rotation, centring screws to rotation, clamp to rotation, sliding-bar to mechanical stage, divisions to movements of mechanical stage, divisions to rotation of stage reading against vernier. Rackwork focussing substage with centring screws and provision for hinging-out of the optic axis.
  - Fine adjustment to the movements of the mechanical stage controlled from above the stage.
  - Large-size plane and concave mirrors.
  - Tripod foot.
  - One pair eyepieces, No. 2x6.
  - One pair eyepieces, No. 4 X 10.
  - One Huygenian eyepiece, No. 5 X 12.
  - One Holoscopic eyepiece x 20.
  - Dustproof triple nose-piece.
  - Objectives, Watson’s former best series i£".
  - Par achromatic 2/3".
  - Semi-apochromatic 1 /6".
  - Universal condenser in substage mount with iris diaphragm and stop-carrier.
  - Set of dark-ground and oblique light stops.
  - Small size polariser and analyser.
  - The whole, complete in polished mahogany case, with carrying handle, lock and key.
  - Price
  - Van Heurck Microscope, Grand Model, by W. Watson & Sons, Ltd., with :—
  - Rackwork coarse adjustment.
  - Body with plain and rackwork draw-tubes, 1.27-in. diameter eyepiece fitting.
  - Horizontal lever fine adjustment.
  - Mechanical stage with milled heads on Turrell system.
  - Divisions to movements reading by vernier, with sliding bar. Complete rotation with rackwork to rotation, centring screws to rotation, clamp and divisions to rotation.
  - Compound substage with rackwork focussing, fine adjustment mounted on a level with the plane of the stage.
  - Rackwork rotation to substage.
  - Plane and concave mirrors.
  - Eyepieces, best capped type, 1.27 in. “ B ” and “ D.”
  - Zeiss compensating eyepiece.
  - Objectives, 12/3", Beck 1/8".
  - Aplanatic Abbe illuminator, three-lens type.
  - Triple nose-piece.
  - Mahogany case.
  - Price
  - (4)
  - / s. d.
  - 65 0 0
  - 60 0 0
  - 60 0 0
- p.4 - vue 4/24
- - MICROSCOPES—(cow^.)
  - “ H.E.S.” Microscope, with :—
  - Rackwork coarse adjustment.
  - Horizontal lever line adjustment.
  - Built-in mechanical stage with sliding bar and divisions to motions.
  - Rackwork focussing substage with centring screws and provision for hinging-out of the optic axis.
  - Eyepieces, Carl Zeiss, student’s size, No. i, No. 3, No. 4.
  - Objectives, Zeiss A A, Zeiss D.
  - Leitz 1/12" oil-immersion.
  - Dustproof triple nose-piece.
  - Full-size two-lens N.A. 1.20 Aplanatised Abbe illuminator in substage mount.
  - The whole complete in polished mahogany case with carrying handle, lock and key.
  - Price . . ..
  - “ H ” Edinburgh Student’s Microscope, by W. Watson S> Sons,
  - Ltd., with :—
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Built-in mechanical stage.
  - Rackwork focussing compound substage with centring screws and provision for hinging-out of the optic axis.
  - Plane and concave mirrors.
  - Tripod foot.
  - Eyepieces, No. 2x6, No. 4 x 10.
  - Objectives, Parachromatic 2/3", 1/6".
  - Powell & Lealand Achromatic condenser, with diaphragm of stops and centring cap.
  - Complete in polished mahogany case.
  - Price . . . . . . .. . . . . . . . . .. 25 0 0
  - “ C ” Edinburgh Student’s Microscope, by W. Watson S> Sons,
  - Ltd,, with :—
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Metal square plain stage.
  - Attachable rotating stage divided to degrees.
  - Compound rackwork focussing and screw centring substage Plane and concave mirrors.
  - Flat horseshoe foot.
  - Body slotted and fitted with analyser and quartz plate.
  - Eyepieces, No. 2 with cross webs, No. 4.
  - Objectives, 1", .
  - Double nose-piece.
  - Abbe illuminator in understage mount, with iris diaphragm and stop-carrier.
  - Set of dark-ground and oblique light stops.
  - Centring nose-piece.
  - Case.
  - Price . . .. . . . . 20 0 0
  - Low-power Binocular Dissecting Microscope, by W. Watson Sons, Ltd., with :—•
  - Eyepieces, Ramsden type, x 8, x 12.
  - Two pairs of objectives on revolving nose-piece, magnifications X 12, x 18, X 24, x 36.
  - Auxiliary stage.
  - Hand rests.
  - Mahogany case.
  - Shop-soiled, condition as new.
  - Price . . . . . . . . . . . . . . . . .. . . 17 5 0
  - £ s- d.
  - 27 10 0
  - (5)
- p.5 - vue 5/24
- - MICROSCOPES—(contd.)
  - “ Praxis ” Microscope, by W. Watson & Sons, Ltd., with :— £ s. d
  - Rackwork coarse adjustment.
  - Micrometer screw pillar fine adjustment.
  - Plain square stage.
  - Plain tubular underfitting.
  - Eyepiece, No. 3, x 8.
  - Objectives, 2/3" and 1/6".
  - Double nose-piece, figure-eight type.
  - Simplified Abbe condenser in sleeve iris mount.
  - Case.
  - Price .. .. .. .. .. .. .. .. .. .. 10 0 0
  - Outfits as above, but with spiral focussing screw underfitting and
  - N.A. 1.20 Abbe illuminator .. .. .. .. .. .. 11 15 0
  - Note.—’There are a number of *' Praxis ” outfits as here described available.
  - “ Fram ” Microscope, by W. Watson &• Sons, Ltd., with :—
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Plain square stage.
  - Plain tubular understage fitting.
  - Eyepiece, No. 3, X 8.
  - Objectives, 2/3" and 1/6".
  - Double nose-piece, figure-eight type.
  - Abbe condenser in understage mount, with iris diaphragm and stop-carrier.
  - Case.
  - Price . . . . . . .. .. . . . . .. . . . . 10 10 0
  - Non-inclinable Microscope (“ Praxis,” but without inclining joint), by W. Watson & Sons, Ltd., with :—
  - Rackwork coarse adjustment.
  - Horizontal lever fine adjustment.
  - Body with draw-tube.
  - Vulcanite-covered square plain stage.
  - Spiral focussing screw underfitting.
  - Plane and concave mirrors.
  - Flat horseshoe foot.
  - Eyepiece, x 6.
  - Objectives, 2/3", 1/6'.
  - Double nose-piece.
  - Sleeve pattern iris diaphragm.
  - Case.
  - Price .. .. .. .. .. .. .. .. .. ..700
  - Portable Microscope, Moginie type, with :—
  - Rackwork coarse adjustment.
  - Micrometer screw fine adjustment.
  - Folding tripod foot.
  - Folding plain stage.
  - Sleeve pattern iris diaphragm.
  - Plane and concave mirrors.
  - Draw-tube to body.
  - Without eyepieces, objectives or case.
  - Price . . . . . . . . . . . . . . .. .. ..6100
  - School Microscope, by W. Watson Sons, Ltd., with :—
  - Rackwork coarse adjustment.
  - Vulcanite-covered plain stage.
  - Eyepiece, x 3.
  - Objective, Parachromatic Y
  - Case.
  - Price . . . . .. . . . . . . . . .. . . 4 10 0
  - (6)
- p.6 - vue 6/24
- - MICROSCOPES—(ccm^.)
  - “ A ” Edinburgh Student Microscope, by W. Watson <S' Sons, £ Ltd., with :—
  - Sliding body coarse adjustment.
  - Horizontal lever fine adjustment.
  - Square metal stage.
  - Tubular understage fitting. x
  - Flat horseshoe foot.
  - Eyepiece, No. 4 xio.
  - 2/3" objective.
  - Double nose-piece.
  - Mahogany case.
  - Price .. . . .. . . .. . . .. . . .. 3
  - Wands Microscope, by W, Watson <5* Sons, Ltd., with :—
  - Tripod foot permanently inclined, friction coarse adjustment to body, plain metal stage, concave mirror, without objective, eyepiece or case.
  - Price .. .. .. .. .. .. .. .. .. .. 1
  - Ten instruments as described above are available.
  - No. 1 Microscope, by Powell <§> Lealand, with :—
  - Rackwork coarse adjustment.
  - Micrometer screw fine adjustment.
  - Large-diameter body tube, with adapters to carry eyepieces of both the small student’s and capped 1.27''' size.
  - Built-in mechanical stage on the Turrell system, with rackwork to the rotation of the stage, divisions to rotation, reading by vernier. Stage also if fitted with double sliding bar.
  - Rackwork focussing substage with centring screws, and rotation by rackwork.
  - Eyepieces, 5 by Powell & Lealand.
  - Powell & Lealand Apochromatic condenser, dry, N.A. 0.92, fully mounted with wheel diaphragms and dark-ground stops. Mahogany case, with internal case to contain accessories.
  - Price . . .. . . . . .. . . . . . . . . . . 40
  - “ Research ” Microscope, by Reichert, with :—
  - Rackwork coarse adjustment.
  - Fine adjustment controlled by milled heads on both sides of the limb.
  - Body of unique type, with rackwork interchangeable eyepiece fitting.
  - Dustproof quadruple nose-piece.
  - Built-in large size mechanical stage, with horizontal and vertical motions, fitted with millimetre scales and reading by vernier Rotation to stage.
  - Centring screws to rotation.
  - Clamp to rotation.
  - Full size research substage with rackwork focussing.
  - Aplanatic condenser.
  - Rackwork iris diaphragm.
  - Plane and concave mirrors.
  - Flat horseshoe foot.
  - Eyepieces, x6, xio.
  - Objectives, 2/3", r/6", 1/12'”.
  - Mahogany case.
  - Price ..
  - ( 7 )
  - 0 0
  - 12 6
  - 0 0
  - ..30 0 0
- p.7 - vue 7/24
- - MICROSCOPES— (contd.)
  - Microscope, by Reichert, with :— £ s. d.
  - Rackwork coarse adjustment.
  - Side fine adjustment.
  - Large square metal plain stage covered with vulcanite.
  - Rackwork focussing substage.
  - Plane and concave mirrors.
  - Eyepieces, Nos. 2x6 and 4x10.
  - Objectives, Reichert, No. 3, No. 7a, 1/12" oil-immersion, no name of maker, 1.30 N.A.
  - Dustproof triple nose-piece.
  - Abbe illuminator.
  - Complete in case.
  - Price . .. .. .. .. .. .. .. .. ..2100
  - Simple Student’s Microscope, by Reichert, with :—
  - Sliding body coarse adjustment.
  - Micrometer screw fine adjustment.
  - Wheel diaphragm below stage.
  - One eyepiece.
  - Objective, 2/3".
  - Mahogany case.
  - Price . . . . . . . . . . . . .. . . . . 2 10 0
  - High-power Binocular Microscope, by Spencer Lens Co., with :—
  - Movement for optional monocular vision to either eye.
  - Rackwork coarse adjustment.
  - Vertical lever fine adjustment.
  - Large square plain stage.
  - Attachable mechanical stage.
  - Spiral focussing screw underfitting.
  - Plane and concave mirrors.
  - Horseshoe foot.
  - One pair eyepieces, x 6.
  - One pair eyepieces, X 10.
  - Objectives, Spencer, 2/3//, 1/6", 1 /12" oil-immersion.
  - Triple nose-piece.
  - Abbe illuminator.
  - Case.
  - Price .. . . . . . . . . . . . . . . . . . . 29 10 0
  - Research Microscope, by Koristka, of Milan, with :—
  - High-power binocular body, for use with objectives up to and including 1/12" oil-immersion.
  - The binocular body is fitted with rackwork interpupillary adjustment and independent adjustment for the right eye.
  - Rackwork coarse adjustment.
  - Side fine adjustment, controlled by milled heads on both sides of the limb.
  - Circular fixed stage with mechanical stage Rackwork focussing substage with centring screws.
  - Plane and opal reflectors.
  - The foot is of the tripod pattern.
  - One pair of eyepieces, No. 2x6.
  - Objectives, 2/3", i/6".
  - Dustproof triple nose-piece.
  - Abbe illuminator in understage mount, with iris diaphragm and stop-carrier.
  - The whole complete in case.
  - Price . . .. . . . . . . . . . . . . . . . . 27 10 0
  - (8)
- p.8 - vue 8/24
- - MICROSCOPES—(contd.)
  - I.M.S. Microscope of modern production, by J. Swift & Sons, £ s. d. with :—
  - Large-diameter body tube with draw-tube.
  - Rackwork coarse adjustment.
  - Fine adjustment controlled from both sides of the limb.
  - Built-in mechanical stage with 75-mm. horizontal motion, 30-mm. vertical motion, reading by pointer; horizontal motion detachable.
  - Rack substage.
  - Plane and concave mirrors.
  - Flat horseshoe foot.
  - Eyepieces, Nos. 6 and 10.
  - Objectives, Swift, , 1/6", 1/12".
  - Abbe illuminator.
  - Dustproof triple nose-piece.
  - Complete in case.
  - Price................................................. .... 27 10 0
  - Microscope, by J. Swift & Sons, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Body with draw-tube.
  - Built-in mechanical stage.
  - Compound rack focussing and screw centring substage.
  - Plane and concave mirrors.
  - Modified tripod foot.
  - Eyepieces, 5.5, 6, 7.
  - Objectives, Swift, 2/3", 1/6", 1/12" oil-immersion.
  - Dustproof triple nose-piece.
  - Abbe illuminator.
  - Case.
  - Price.............................................................. 24 0 0
  - Microscope, by J. Swift <S* Sons, with :—
  - Rackwork coarse adjustment.
  - Wales type limb.
  - Body tube with sliding draw-tube, fitted with connecting flange for photomicrography.
  - Rackwork coarse adjustment.
  - Climax type fine adjustment.
  - Mechanical stage with complete rotation, and double sliding bar.
  - Rackwork focussing substage with centring screws.
  - Eyepieces, Nos. 2x6 and 4 X 10.
  - Objectives, 2/3" and 1/6'.
  - Double nose-piece.
  - Abbe condenser.
  - Case.
  - Price .. .. .. .. .. .. .. .... .. 20 0 0
  - Student’s Pattern Microscope, by J. Swift <&• Sons, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Body with draw-tube.
  - One eyepiece, No. 3.
  - Objectives, 2/3", 1/6*.
  - Dustproof triple nose-piece.
  - Abbe illuminator, 1.20 N.A., in understage mount, with iris diaphragm and stop-carrier.
  - The whole complete in polished mahogany case.
  - Price ... .. .. .. .. .. .. .. .. .. 13 10 0
  - (9)
- p.9 - vue 9/24
- - MICROSCOPES—(contd.)
  - Student’s Microscope, by J. Swift & Sons, with :— £ s. d.
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Plain metal stage with simple mechanical stage.
  - Spiral focussing screw underfitting.
  - Eyepieces, x 6 and x io.
  - Objectives, Swift 2/3" and 1/6".
  - Triple nose-piece.
  - Abbe condenser in mount.
  - Mahogany case.
  - Price .. .. .. .. .. .. .. .. .. .. 12 10 0
  - Student’s Microscope, by J. Swift & Sons, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Plain square stage with Wright’s finder.
  - Plain understage fitting.
  - Eyepieces, Nos. 2x6 and 4 x 10.
  - Double nose-piece, figure-eight type.
  - Simplified Abbe condenser in sleeve iris mount.
  - Mahogany case.
  - Price .. .. .. .. .. .. .. .. ..1000
  - Student’s Microscope, by J. Swift <S- Sons, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adj ustment.
  - Square metal plain stage with Wright’s finder.
  - Plain tubular condenser carrier.
  - Plane and concave mirrors.
  - Tripod foot.
  - Eyepieces, X4, X5.5.
  - Objectives, 2/3''', 1/6".
  - Double nose-piece.
  - Sleeve-pattern iris diaphragm.
  - Complete in mahogany case.
  - A very excellent student’s microscope in perfect condition.
  - Price .. .. .. .. .. .. .. .. .. ..700
  - Microscope, by J. Swift & Sons, with :—
  - Rackwork coarse adjustment.
  - Micrometer screw pillar fine adjustment.
  - Square plain stage with Wright’s finder.
  - Tubular understage fitting.
  - Tripod foot.
  - Plane and concave mirrors.
  - One eyepiece, No. 1.
  - Objectives, 2/3" and 1/6".
  - Double nose-piece.
  - Wheel of diaphragms.
  - In mahogany case.
  - Price .. .. .. .. .. .. .. .. ..6100
  - “ Laboratory ” Microscope, by Leitz, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Rotating circular stage with centring screws.
  - Best form rackwork substage, with rack to iris.
  - Eyepiece, x6.
  - Objectives, 2/3", 1/6".
  - Triple nose-piece.
  - Abbe condenser.
  - Mahogany case.
  - Price
  - ( 10 )
  - .c 14 0 0
- p.10 - vue 10/24
- - MICROSCOPES—(cow^.)
  - Microscope “ D,” by Leitz, with :— £ s. d.
  - Rackwork coarse adjustment.
  - Side fine adjustment controlled by milled heads on both sides of the limb.
  - Square vulcanite stage.
  - Rack focussing substage with swing-out iris and condenser.
  - Plane and concave mirrors.
  - One eyepiece.
  - Objectives, 3 and 6.
  - Triple nose-piece.
  - Abbe illuminator.
  - Case.
  - Price . . . . . . . . .. . . .. . . .. . . 14 0 0
  - Student’s Microscope, by Leitz, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Vulcanite-covered plain stage.
  - Spiral focussing screw underfitting.
  - Eyepiece, x 8.
  - Objectives, 2/3" and 1/6".
  - Abbe condenser.
  - Case.
  - Price . . . . .. . . . . .. .. . . .. . . 12 10 0
  - Student’s Microscope, by Leitz, larger type, with :—
  - Non-inclining limb.
  - Horseshoe foot.
  - Sliding body coarse adjustment, with sufficient latitude for fitting a double nose-piece.
  - Pillar micrometer screw fine adjustment.
  - One eyepiece, No. 2.
  - Objective, No. 3.
  - Complete in mahogany case.
  - Price . . . . . . . . .. . . . . . . . . ..2 15 0
  - Simple Non-inclinable Student Stands, by Leitz, with :—
  - Non-inclining limb.
  - Sliding body coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Fitted eyepiece No. 1.
  - Objective, No. 3.
  - Wheel diaphragm below stage.
  - No case.
  - Price, each .. .. .. .. . . .. .. .. .. 1 10 0
  - Microscope, by Zeiss, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Square vulcanite-covered stage.
  - Rackwork substage with swing-out iris diaphragm and condenser.
  - Plane and concave mirrors.
  - One eyepiece.
  - Zeiss objectives, AA and 1/6".
  - Triple nose-piece.
  - Case.
  - Price .. .. .. .. .. .. .. .. .. .. 12 10 0
  - Zentmeyer Model Microscope, by Ross, with :—
  - Wenham binocular body, fitted with rackwork to interpupillary adjustment.
  - Rackwork coarse adjustment.
  - Ross horizontal lever fine adjustment with roller bearings.
  - («)
- p.11 - vue 11/24
- - MICROSCOPES—{contd.)
  - £ s. d.
  - Zentmeyer Model Microscope—continued.
  - Built-in mechanical stage with double sliding bar and rotation through 270°, rackwork to rotation, with divisions to 50 on silver, reading by pointer.
  - Compound rackwork substage with centring screws, rackwork to rotation.
  - Instrument finished in all bright brass.
  - Double nose-piece.
  - Eyepieces, one pair No. x 5, and 2 adapters between standard students size and draw-tube.
  - Two-lens Abbe condenser, N.A. 1.20, in substage mount with iris diaphragm and stop-carrier.
  - Wooden case.
  - Price .. .. .. .. .. .. .. .. .. ..1500
  - This instrument is not of modern construction, but is in excellent condition, and would be eminently suitable for an amateur who wanted a well-made stand with many refinements.
  - Student’s Microscope, by Ross, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Large square metal stage, vulcanite covered.
  - Plain tubular understage fitting.
  - Plane and concave mirrors.
  - Horseshoe foot.
  - Eyepieces, x6, x8.
  - Objectives, Ross 2/3", 1/6".
  - Beck i/io" immersion with correction collar.
  - Double nose-piece.
  - Sleeve-pattern iris diaphragm.
  - Polished mahogany case.
  - Price .. .. .. .. .. .. .. .. .. ..900
  - Wenham Binocular Microscope, finished in bright brass, by Smith and Beck, with :—
  - Rackwork coarse adjustment.
  - Nose-piece fine adjustment.
  - Built-in mechanical stage.
  - Compound rackwork focussing substage.
  - Eyepieces, 5, two of them fitted with pointers.
  - Objectives, \\", 2/3" and 1/5", with correction collar.
  - Neutral tint reflector, bull’s-eye stand condenser.
  - Live box, stage forceps, erecting lens, separate draw-tube for use with the instrument as a monocular.
  - Achromatic condenser, with wheel of diaphragms.
  - Polariser and analyser.
  - Mahogany case, with accessories in separate case.
  - Price .. .. .. .. .. .. .. .. .. ..10100
  - Microscope, by Crouch. Best Research Model, all-bright finish, with :—
  - Rackwork coarse adjustment.
  - Micrometer screw pillar fine adjustment.
  - Body with rackwork draw-tube, 160-mm. tube length.
  - Built-in mechanical stage with rotation through 270°, rotation fully divided, centring screws to rotation.
  - Rackwork focussing substage with centring screws and with provision for moving out of the optic axis.
  - Plane and concave mirrors.
  - Modified tripod foot.
  - Eyepieces, X 6, X 10, Kellner type X 10.
  - Polariser and analyser.
  - Low-power dark-ground condenser.
  - Zeiss clover-leaf triple nose-piece.
  - ( 12 )
- p.12 - vue 12/24
- - MICROSCOPES—{contd.)
  - Microscope—continued. £
  - Abbe illuminator in substage mount.
  - Objectives, i", no name of maker.
  - 4/10", no name of maker.
  - 1 /6" Swift.
  - Case.
  - Price .. . . . . . . . . .. .. . . . . . . 25
  - A unique opportunity to obtain a really fine stand.
  - Microscope, by Crouch, with :—
  - Wenham binocular body convertible into a monocular by displacement of the prism.
  - Rackwork interpupillary adjustment to eyepieces.
  - Rackwork coarse adjustment.
  - Differential fine adjustment controlled from below the limb.
  - Built-in mechanical stage.
  - Compound rack focussing substage, with centring screws acting on dove-tails.
  - Plane and concave mirrors.
  - Modified tripod foot.
  - Two pairs of best capped pattern eyepieces.
  - Objectives, 2" Crouch.
  - Crouch.
  - 1 /8" Ross.
  - Double nose-piece.
  - Achromatised condenser, with wheel of dark-ground stops.
  - The whole complete in polished mahogany case.
  - In excellent condition.
  - Price .. .. . . . . . . . . . . . . . . . . 15
  - Student’s Microscope, by Crouch, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Square metal ebonite-covered plain stage.
  - Spiral focussing screw underfitting.
  - Modified tripod foot.
  - Eyepieces, x6, xio.
  - Objectives, 2/3", i/6,/.
  - Double nose-piece.
  - Mahogany case.
  - Price .. . . . . . . . . . . . . . . . . 5
  - Student’s Microscope, by Crouch, with :—
  - Sliding body coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Square metal plain stage.
  - Wheel of diaphragms.
  - Concave mirror.
  - Modified tripod foot.
  - Two eyepieces, x 6, x 10.
  - Objectives, 2/3", 1/6".
  - Double nose-piece.
  - Price . . . . . . . . . . . . . . . . . . 3
  - “ Society of Arts ” Pattern Microscope, with —
  - Rackwork coarse adjustment.
  - Micrometer screw fine adjustment.
  - Square stage, with spring clips and revolving diaphragm.
  - No. 2 eyepiece.
  - Triple dividing objective, 1", and .
  - Concave mirror.
  - Live cage, stage and hand forceps.
  - Mahogany case.
  - Price .. ,. .. .. .. . . .... .. 4
  - ( 13 )
  - s. d.
  - 0 0
  - 0 0
  - 10 0
  - 10 0
  - 10 0
- p.13 - vue 13/24
- - MICROSCOPES—(contd.)
  - Student’s Microscope, by Millikin & Lawley, with :— £ s. d.
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Square stage, glass covered, fitted with wheel diaphragm.
  - Tubular understage fitting.
  - Plane and concave mirror.
  - One eyepiece.
  - 2/3''' objective.
  - Double nose-piece.
  - Case.
  - Price..............................................................3 10 0
  - Microscope, all bright brass, engraved “ N. & Z.” with :— io" body tube.
  - Rackwork coarse adjustment.
  - Nose-piece fine adjustment.
  - Mechanical stage.
  - Tubular underfitting.
  - In case.
  - Price..............................................................300
  - PETROLOGICAL MICROSCOPES
  - Petrological Microscope, by Henry Crouch, with :— £ s. d.
  - Rackwork coarse adjustment.
  - Micrometer screw pillar fine adjustment, io" body, with analyser mounted in lower end.
  - Rotating stage divided to degrees and reading by arrow.
  - Centring screws to stage.
  - Polariser with spring detent for quarter circles.
  - Tubular fitting with swing out.
  - Eyepiece with cross lines and stop pin. i" objective.
  - Plane and concave mirrors.
  - Complete in case.
  - Price .. .. .. .. .. .. .. .. .. ..1200
  - Petrological Microscope, by Leitz, with :—
  - Rackwork coarse adjustment.
  - Pillar micrometer screw fine adjustment.
  - Circular rotating stage, divided on circumference, and reading by vernier.
  - Rack focussing substage.
  - Eyepiece, No. i.
  - No. 3 with cross-webs.
  - Objectives, 2", no name of maker.
  - No. 2 Leitz.
  - No. 1 a Leitz.
  - 4/10", no name of maker.
  - 1/8" Watson.
  - Triple nose-piece.
  - Three objective adapters.
  - Focussing Bertrand lens.
  - Analyser prism.
  - Centring nose-piece.
  - Slit for quartz wedge.
  - Polariser and high-angle analyser.
  - Red gypsum plate.
  - Quarter-wave mica plate.
  - Case.
  - Price .. .. .. .. .. .. .. .. .. . 22 0 0
  - ( 14 )
- p.14 - vue 14/24
- - PHOTOMICROGRAPHIC CAMERAS and PROJECTION APPARATUS
  - Photomicrographic Camera, by Zeiss, eyepiece type, for roll films, £ with extension body to carry gx 12 cm. plates or film pack, one metal dark slide and one film-pack adapter .. .. .. . . 18
  - Zeiss Planar Photomicrographic Lens, Series ia No. i, f/4.5, f =
  - 2 cm., R.M.S. thread .. .. .. .. .. .. •.. 4
  - Gordon’s Photomicro. Camera, by Beck .. .. .. .. 3
  - Universal Projection Apparatus, for :—
  - 1. —Microscopic objects under high, medium, and low magnifi-
  - cations.
  - 2. —Lantern slides.
  - 3. —Small opaque objects.
  - The apparatus consists of a “ Service ” Microscope with rackwork coarse and vertical lever fine adjustments, with sliding draw-tube, “ Service ” pattern attachable mechanical stage, compound rack substage with centring screws, dustproof triple nose-piece, with 1", and Parachromatic objectives, eyepieces x6 and X 10. The microscope is mounted in a horizontal position, on saddle fittings on a triangular bar.
  - The accessories for transparent and opaque projection are as follows:—
  - Large cooling trough.
  - Double lantern-slide holder.
  - Auxiliary condenser.
  - 2" diameter lantern-slide projection lens, in rack focussing mount with adjustable reflex mirror.
  - Adjustable platform for small opaque objects.
  - 3" diameter projection lens for opaque objects.
  - 10-amp. arc lamp, with mechanical adjustments, housed in metal lantern body, with 8£" diameter compound lantern condenser.
  - The illumination for all three methods of projection is by means of the 10-amp. arc lamp and the change over from one to the other is extremely quick and simple.
  - The apparatus is mounted on an adjustable cast-iron stand. Price .. .. .. .. .. .. .. .. .. .. 50
  - Baker School Micro-projector, complete with Nature Microscope,
  - spare focussing sleeve, projection lens, etc... .. .. .. 7
  - Projection Lantern, suitable for a science laboratory, consisting of an adjustable baseboard, having metal mounting thereon, body of lantern is made of mahogany ; there is a cooling trough and alternative illuminants, consisting of arc lamp (without resistance), high-wattage electric lamp and reflector, adjustable condenser, wide-aperture lantern projection lens, microscope body with revolving fitting for three eyepieces, dustproof triple nose-piece, built-in iris diaphragm with fine adjustment, and separate saddle carrying mechanical stage .. .. .. .. .. ..10
  - Edinger Apparatus, by Leitz, for projection drawing, and microprojection, complete with stand, arc lamp, etc. .. .. .. 10
  - Metal Microscope Floor Stand, by Ogilvy. Consisting of Watson -Conrady illuminating system for visual work, a triangular bar and metal table, mounted on heavy metal tripod foot. The triangular bar carries five saddles, the first of which holds a cylindrical metal lamp-housing, suitable for a ribbon filament lamp. This housing is fitted with an iris diaphragm, and can be moved either in a vertical or a horizontal direction by means of rack and pinion.
  - The second saddle holds a Watson-Conrady Aplanatic-Achromatic
  - ( 15 )
  - s. d.
  - 0 0
  - 0 0 0 0
  - 0 0 10 0
  - 0 0 0 0
- p.15 - vue 15/24
- - 2 mm.
  - 3 mm.
  - 3 mm.
  - PHOTOMICROGRAPHIC CAMERAS and PROJECTION APPARATUS—(contd.)
  - Metal Microscope Floor Stand—continued. £ s. d-
  - condensing system in a centring mount, and is fitted with an iris diaphragm, while the third saddle carries a filter-holder for three filters, each of which can be brought into the optic axis by a sliding motion of the attachment. The fourth saddle holds a bi-concave parallelising lens in a centring mount, and this mount is fitted with an iris diaphragm. The last saddle is empty, and is supplied as an extra, should it be needed. The metal table is made to accommodate the microscope and the whole system can be raised and lowered as desired, by chain gear, and can be clamped into position. In addition to this, the triangular bar can be set at any angle through a radial movement, and clamped.
  - Offered for the special price of . . . . . . . . ... 37 10 0
  - OBJECTIVES
  - Immersion
  - ZEISS. £ s. d.
  - Apochromalic 2 mm. N.A. 1.30, tube length 250 mm. 10 0 0
  - 2 mm. N.A. 1.30, ,, ,, 160 mm. 10 10 0
  - 3 mm. N.A. 1.40, ,, ,, 250 mm. 14 10 0
  - WATSON. Holoscopic 2 mm. N.A. 1.37, tube length 160 mm. 7 10 0
  - 2 mm. N.A. 1.37, ,, ,, 200 mm. 7 10 0
  - REICHERT. 1/15" Homo-immersion 3 10 0
  - BECK. 2 mm. 4 0 0
  - KORISTKA. 1/15" N.A. 1.30 . . 4 0 0
  - SWIFT. 1/12" N.A. 1.30 3 10 0
  - BAUSCH & LOMB. I/I2" 3 0 0
  - POWELL & Apochromatic LEALAND. 1/12" N.A. 1.40, with correction collar 3 10 0
  - WINKEL-ZEISS. 1.8 mm. N.A. 1.30 4 0 0
  - LEITZ. 1/16" N.A. 1.30 . . 4 0 0
  - SPENCER LENS CO. 1.8 mm. N.A. 1.25 3 10 0
  - NO NAME. 1/12" N.A. 1.30, of Continental manufacture. . 3 10 0
  - WINKEL. 1.8 mm. N.A. 1.30 3 10 0
  - CROUCH. 1/12" N.A. 1.30, tube length 170 mm.. . 3 0 0
  - SWIFT. 118" water-immersion, with correction collar 1 10 0
  - ZEISS. Dry 3 mm. N.A. 0.95, tube length 250 mm., with correction collar 10 0 0
  - E, 2.9 mm. N.A. 0.90 2 10 0
  - WATSON. Apochromatic 3 mm. N.A. 0.95, tube length 200 mm. 7 0 0
  - BECK. 3 mm. 2 0 0
  - LEITZ. No. 8 2 0 0
  - REICHERT. No. 7a 2 0 0
  - ( 16 )
- p.16 - vue 16/24
- - OBJECTIVES— (contd.)
  - 4 mm.
  - r
  - 6 mm.
  - r
  - 8 mm.
  - V
  - 12 mm.
  - r
  - 16 mm.
  - r
  - Low
  - Powers
  - WATSON. £ s
  - Holoscopic 4 mm. N.A. 0.95, tube-length 250 mm. . . . . 4 0
  - 4 mm. N.A. 0.95, ,, ,, 180 mm. . . . . 4 0
  - 4 mm. N.A. 0.90, ,, ,, 250 mm. .. . . 3 10
  - Parachromatic 1/6" 0.87 . . .. .. .. .. .. 1 15
  - 116" 0.74 . . .. . . . . .. . . ..25
  - Argus 1/6" 0.65.. .. .. .. .. .. .. 1 15
  - ZEISS.
  - Apochromatic 4 mm. N.A. 0.95, correction collar, tube length
  - 250 mm. . . . . . . . . .. ..60
  - ZEISS. D, very early pattern . . . . . . . . . . 15
  - ROSS. 1/6" ................................1 10
  - WATSON.
  - Holoscopic 6 mm. N.A. 0.95, tube length 160 mm. . . . . 3 15
  - SWIFT. early pattern . . . . . . . . . . . . 15
  - ZEISS.
  - Apochromatic 6 mm. N.A. 0.95, tube-length 250 mm., with correction collar . . . . . . . . . . ..50
  - LEITZ.
  - Apochromatic 8 mm. N.A. 0.65
  - 5 0
  - ZEISS.
  - Apochromatic 8 mm. N.A. 0.65, tube length 250 mm.
  - ZEISS. C, very early pattern, no box
  - ZEISS.
  - Apochromatic 12 mm. N.A. 0.65, tube length 250 mm.
  - 12 mm. N.A. 0.65, with built-in iris diaphragm. (The objective is not engraved with maker’s name, etc., but is quite obviously by Zeiss “ B ” ...........................
  - NEGRETTI & ZAMBRA.
  - BAKER. early pattern, with correction collar
  - SEIBERT. No. 4, ............................
  - REICHERT.
  - Apochromatic 16 mm. N.A. 0.30, tube length 160 mm.
  - 5 10 1 0
  - 5 10
  - 5 0 1 5
  - 0 15 0 17 1 5
  - 4 0
  - WATSON.
  - Holoscopic 16 mm. N.A. 0.45, tube length 160 mm. . . . . 3 10
  - WANDS. 2/3" ..............................0 13
  - ZEISS. A, very earty pattern, no box . . . . . . . . 0 12
  - ROSS. 1"....................................0 10
  - REICHERT, ib variable ..........................12
  - ZEISS.
  - Achromatic 36 mm. . . 110
  - MOGINE. 2'....................................0 17
  - WATSON.
  - Wands 2" . . .. .. 0 10
  - BAKER. 3"....................................15
  - WATSON.
  - Parachromatic 3" .. . .. • • 15
  - WRAY. 4'..................... .............0 15
  - l- ...............0 15
  - d.
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 6
  - 0
  - 0
  - 0
  - 6
  - 6
  - 0
  - 6
  - 0
  - 6
  - 0
  - 0
  - 0
  - 0
  - 0
- p.17 - vue 17/24
- - EYEPIECES
  - Porro Prism Erector, with special securing clamp for use on dissecting microscope, standard size fitting .. ......
  - Binocular Stereoscopic Eyepiece for low powers, by Reichert, with one pair No. 5 eyepieces, in case
  - Binocular Stereoscopic Eyepiece for low powers, by Reichert, with two pairs eyepieces. Nos. 2 and 5, in case
  - WATSON.
  - Penfold Design Angle Eyepiece, double prism system, giving inclination at all angles to the optic axis of the microscope from vertical to horizontal. New price £5 10s. Offered for Will carry standard student size eyepieces and fit standard student size tubes.
  - Holoscopic. Bes1
  - Compensating .9173'’
  - Huygenian, Capped
  - ZEISS.
  - Compensating .917 1.32
  - Homal IV f=20 mm. Homal III f=2om Odd Compensating WATSON.
  - RAMSDEN.
  - Micrometer, 1
  - Micrometer,
  - No. 3 X No. 4 X X 4, 1.27'
  - „ 1.27" X 7 1 10 0
  - ,, 1.27" X 10 1 10 0
  - „ I.27" X14 1 10 0
  - ,, 1.7,7" x 20 1 10 0
  - •9I73/'» X7 and X 10, each . . 1 0 0
  - X 4 .. 0 17 6
  - X 6 0 17 6
  - X 8 0 17 6
  - 1.27' x 5 0 15 0
  - 1.27' x 6 0 15 0
  - 1.27" X 8 0 15 0
  - 1.27" x10 . . 0 15 0
  - 1.32" X 4 0 15 0
  - 1.32" X 6 . . 0 15 0
  - 1.32" X 8 . . 0 15 0
  - 1.32'’' X 10 . . 0 15 0
  - size, X4, X 6, x8 and X 18, each 1 0 0
  - size, X 18 . . 1 5 0
  - , for Photomicrography . . 1 5 0
  - . . . • 1 5 0
  - .9173" x 7 0 17 6
  - r Petrology, 1.27" . . 3 0 0
  - .9173' 2 15 0
  - l, screw type, 1.27", in aluminium 4 0 0
  - , screw type, by Ross, in brass, .9173" 3 10 0
  - 6, by Zeiss, 1.32" size 0 15 0
  - 3, by Zeiss, .9173" size 0 10 6
  - 3, ,, 9173" size 0 10 6
  - size . . 1 5 0
  - Projection LEITZ.
  - One pair A5 Eyepieces, for Leitz low-power binocular magnifier, per pair
  - £ s. d.
  - 2 5 0
  - 5 10 0
  - 6 0 0
  - 3 5 0
  - 1 15 0
  - Substage Condensers and Mounts £ s. d.
  - Achromatic Condenser, by Beck, in centring mount, with wheel of
  - diaphragms and wheel of daylight blue filters . . . . .. 3 10 0
  - Abbe Illuminator in substage mounting, with iris diaphragm (make
  - unknown) . . . . . . . . . . • • • • 1 10 0
  - Nelson Dark-ground Oil-immersion Condenser, in substage mount,
  - complete with centring screws .. .. .. .. ..200
  - Nelson Cassegrain Condenser, No. 2, optical part .. . . ..200
- p.18 - vue 18/24
- - Substage Condensers and Mounts—(contd.)
  - £ s. d.
  - Spot Lens .. .. .. .. .. .. .. .. .. 0100
  - Plain Underfitting, with provision for swinging-out of the optic axis,
  - suitable for early type " Service ” microscope .. .. .. 0 7 6
  - Sleeve Iris Mount .. .. .. .. .. .. ..076
  - Mica-Selenite Stage, suitable for Swift microscope . . . . . . 115 0
  - Wratten Filter, No. 78, blue, for Leitz condenser .. . . .. 0 4 0
  - Wratten Filter, No. 44, blue-green, for Leitz condenser . . .. 0 4 0
  - Koristka Catoptric Ultra-Microscope Condenser . . .. . . 4 0 0
  - Holos. Immersion Paraboloid, optical part .. .. .. .. 110 0
  - Beck Achromatic Condenser, 7 mm., optical part only, R.M.S. thread 3 10 0
  - Ross Selenite Mount, to fit standard substage .. . . . . . . 15 0
  - ILLUMINATING APPARATUS
  - Stand Condensers, Lamps, etc.
  - Vertical Illuminator, Johnstone-Stoney type
  - Condenser Vertical Illuminator, with disc reflector
  - Vertical Illuminator, cover-glass type
  - Vertical Illuminator, prism type, with iris diaphragm
  - Combined Prism and Cover-glass Vertical Illuminator, by Swift
  - Scop Condenser, with iris diaphragm (no stand)
  - Scop Condenser, with iris diaphragm, on stand . .
  - 4^" diameter Plano-Convex Lens, mounted on gymbal, with clamping screw, suitable for use in a saddle Side Silver Reflector, on arm to fit in stage of microscope ,, ,, ,, with collar to fit on objective
  - “ Ogilvy ” type Research Lamp, for microscope work, with cylindrical body mounted on circular upright pillar, fitted to a tripod foot with extra wide spread. The body can be raised and lowered as desired, and clamped into the required position. There is a built-in iris diaphragm, controlled by a push-and-pull rod. At the base of the lamp body is fitted a square bar, carrying a Nelson type lamp condenser, which can be clamped in the required sition . . . . . . .. .. . . . . each
  - Sliding Resistance, 200-230 volts-, suitable for 12-volt 6-watt lamps Substage Lamp, early pattern, by Watson & Sons
  - Small Oil Microscope Lamp, by Johnson & Sons, metal reservoir and chimney
  - Powell & Lealand type Bull’s-eye Stand Condenser, lens 6 cm. diameter Large Prism for top illumination (chipped on one corner), on brass stand
  - £ s. d.
  - 1 10 0 4 0 0
  - 0 10 0 15 0
  - 2 15 0
  - 2 0 0 2 10 0
  - 1 10 0 0 15 0
  - 0 17 6
  - 8 0 0 10 0 10 0
  - 0 7 6
  - 10 0
  - 0 15 0
  - MICROTOMES i .. d.
  - Cathcart-Darlaston Microtome, for freezing and embedding . , . . 3 10 0
  - Cole’s Pattern Section Knife, with steel handle . . . . . . . . 0 5 0
  - Strop, leather on handle .. .. .. .. .. •• 016
  - Cole’s Pattern Hand Microtome, for clamping to table. . . . . . 15 0
  - Hand-type Microtome, in heavy brass mounting, in case . . . . 0 12 6
  - Schanze Microtome, sledge type, with wax holder and freezing attachments, with two large knives, in case . . . . .. . . 8 10 0
  - Section Cutter, by R. & J. Beck, for embedded or frozen material, with
  - glass plates . . . . . . . . . . . • • . • 1 10 0
  - Jung-Thoma Microtome and knife .. .. .. .. .. 4100
  - Simple Stand Section Cutter .. .. .. .. .. .. 050
  - ( 19 )
- p.19 - vue 19/24
- - SUNDRY APPARATUS £
  - Mechanical Stage from “ H ” Edinburgh Student's Microscope . . 8
  - Saddle fitting for triangular bar . . . . . . . . . . 0
  - Table Board, covered green baize, to take Microscope and Lamp . . 0
  - Double Nose-piece, dustproof type . . . . . . . . 0
  - Double Nose-piece, figure-eight type .. . . . . . . 0
  - Sloan Objective Changer and 2 holders, by Beck . . . . . . 1
  - Three Sloan Objective-holders, by Beck, in case . . . . . . 1
  - Colorimeter, Duboscq type, internal illumination, complete with one pair brackets, double rackwork scales and reading mirror. New.
  - No name of maker . . . . . . . . . . . . . . 18
  - Thoma-Zeiss Haemacytometer . . . . . . . . . . 1
  - Sahli Hsemaglobinometer . . . . . . . . . . . . 1
  - Abbe Camera Lucida, by Watson, to fit 1.27" size tube . . 3
  - Zeiss Drawing Prism to fit over eyepiece . . . . . . 1
  - Apparatus for demonstrating polarisation phenomena, exhibited by glass under stress, consisting of : stressing clamp, 2 blocks of glass in wooden frames, and 4 other blocks of glass. With this apparatus, demonstrations of polarised light can be obtained and shows
  - phenomena similar to those of the Coker Torsion outfit . . 2
  - Drawing Table, for use with Abbe camera lucida . . . . 0
  - Sliding Bar, suitable for stage 9.2 cm. square . . . . . . 0
  - Pair of Metal Tuning Forks, on wooden stands, with mallet for sound resonance experiments . . .. . . . . . . 0
  - Beale type Camera Lucida, mounted in cap, to fit over capped eyepiece .. . . . . . . . . . . . . . . 0
  - Drawing Prism, by Baker, to fit over eyepiece . . . . . . 0
  - Beale type Camera Lucida, but with prism instead of neutral tint
  - disc . . . . . . . . . . . . . . . . 1
  - Brass Syringe, by Beck, in case . . . . . . . . . . 0
  - Glass Specimen Jar, with glass stopper, 4" x 2f" . . . . 0
  - Glass Jar, with glass stopper and dipper, 5"x if" . . • • • • 0
  - Cross Line Disc, for eyepiece . . . . . . . . . . . . 0
  - 5-cm. Scale, divided to .5 mm., on 3 X 1" . . . . . . • 0
  - Stage Micrometer, on 3x1" slip, divided to i/iooth and i/i,oooth of
  - an inch . . . . .. .. .. .. .. .. 0
  - Maltwood Finder, by Beck . . . . . . . . . . 0
  - Mahogany Cabinet, to hold 1,350 slides in 30 drawers, each drawer containing 45 specimens in 3 rows, drawers of wood with wooden cases. The cabinet is mounted on a plinth, and has a glass front, lock and key. There is an additional extra deep drawer for
  - apparatus .. .. . . . . . . . . .. .. 15
  - Mahogany Cabinet, to hold 1,008 slides in 21 trays, glass front, lock
  - and key (carriage 2s. 6d. extra) . . . . . . . . 3
  - Hand Centrifuge, with 2 buckets and table clamp . . . . . . 1
  - Davis Shutter . . . . . . . . . . . . . . 0
  - Travis Expanding Stop, Abbe size, in brass box . . . . 0
  - One Gram Grubler’s Ponceau Stain . . . . . . . . 0
  - Pocket Magnifier, in folding metal mount, Platyscopic X 8 . . . . 0
  - Pocket Magnifier, in folding metal mount, £" diameter, doublet lens,
  - X10 .. . . . . .. - .. .. . . • • 0
  - Ditto, X12.. .. .. .. .. .. .. .. •• 0
  - Coddington Lenses, in metal mounts with handles, in three diameters.
  - 1", i£" .......................................each 0
  - ( 20 )
  - s. d.
  - 10 0 10 0 10 0 15 0
  - 8 0 5 0
  - 0 0
  - 10 0 0 0 0 0 0 0 0 0
  - 15 0 17 6 15 0
  - 10 0
  - 3 6 17 6
  - 0 0 15 0 1 6 1 6
  - 3 6 5 0
  - 5 0
  - 4 0
  - 0 0
  - 10 0
  - 5 0 14 6 14 6
  - 1 0 8 6
  - 7 6
  - 8 9
  - 6 0
- p.20 - vue 20/24
- - SUNDRY APPARATUS—(contd.)
  - s. d.
  - £
  - Akehurst Pond-life Tank, rectangular shape, for use with Greenough
  - Microscope and water-immersion objective . . . . . . .. 1
  - Chrome Loop, in glass handle, for bacteria . . . . . . 0
  - Metal Box, for carrying blood smears on 3" x 1" slips . . .. . . 0
  - Hypodermic Syringe, India Office pattern, 1 c.c., in hinged nickel-plated
  - metal case, complete with 2 platinum-iridium needles, made in glass 1 Sykes’ Hydrometer, solid turned brass float, Bates’ metal weights,
  - ivory thermometer, complete in mahogany case . . .. . . 2
  - Morton Non-luminous Ophthalmoscope, with full set of lenses and 3 mirrors, complete with condensing lens and colour test handle, in case . . . . .. . . .. . . . . .. . . 1
  - Couper’s Non-luminous Ophthalmoscope, full set of lenses, 2 mirrors,
  - in case . . . . . . . . . . . . . . .. . . 1
  - Desk Barometers, with thermometers of unique design in chromium.
  - Each . . . . . . . . . . . . . . .. 0
  - Wall Barometers, modern design, excellent instruments. Each .. 1
  - Desk Barometers, in coloured bakelite. Worth double. Each . . 0
  - Minifex. The smallest precision camera in the world, weight 5 oz., length 3J", width 2", thickness ij". Takes film, 36 exposures, Compur shutter with delayed action, f/3.5 Trioplan lens. New . . 5
  - 9x12 cm. Folding Focal-plane Camera, Dynar i/6 lens, 12 single
  - slides, leather case. Good condition. Worth double .. .. 5
  - 6£ X 4f Sanderson Camera, field type, 1 slide .. .. .. 2
  - Combination Set, consisting of clock and aneroid barometer, each 12" face, recording barograph, and Sixes maximum and minimum thermometer, in ebonised wood case, measuring 24" wide, 12" high, and 6" deep.
  - This is of early manufacture, is accurate in working, and forms an attractive piece of furniture . . . . . . . . .. . . 12
  - Browing Spectroscope, with focussing adjustment to eye-lens, glass
  - cover to slit, giving a very fine broad spectrum . . . . . . 2
  - Browing Spectroscope, with adjustable slit and comparison prism, with
  - wave-length scale. It can be mounted for use with the Microscope 1 Ashe-Finlayson Comparascope, by R. & J. Beck, with instructions . . 2
  - BOOKS
  - £
  - The Powers of the Creator displayed in the Creation, by Sir John Graham-Dalzell, 3 vols., 1851, beautifully illustrated, very rare collector's edition . . . . . . .. . . .. 3
  - The Rotifera, Hudson and Gosse, 3 vols., bound in cloth, letterpress,
  - plates and supplement . . . . . . . . .. 7
  - Natural History of Plants, by Kerner and Oliver, Vols. I and II
  - (4 books) . . . . . . . . . . . . .. 3
  - Dictionary of British Scientific Instruments . . .. .. .. 0
  - National Academy of Sciences, Vol. IX, Monograph of the Bombycine Moths of North America, including transformations and origin of the larval markings and armature. Washington, 1905 .. . . 1
  - The Microscope, by Dr. H. Van Heurck, translated by Wynne Baxter 2
  - Schmidt’s Atlas of the Diatomaceas, Parts 1 to 42 and Part 45, each
  - part containing the full complement of plates. In good condition 25
  - Artischen Diatomeen, by Cleve and Grunow . . . . .. . . 0
  - ( 21 )
  - 0 0 8 6 3 6
  - 1 0
  - 0 0
  - 10 0
  - 5 0
  - 18 6 10 0 15 0
  - 0 0
  - 10 0 0 0
  - 0 0
  - 10 0
  - 10 0 0 0
  - s. d.
  - 10 0
  - 10 0
  - 0 0 2 6
  - 0 0 5 0
  - 0 0 17 6
- p.21 - vue 21/24
- - BOOKS—(contd.)
  - Die Kieselalgen der Schweiz, by Meister, and Susswasser Diatomeen £ Deutschland, by Hustedt, comprising 48 plates for the first, and 10 plates for the second, bound in cloth, in one volume . . . . 1
  - Diatoms of Central Europe, by Hustedt, Vol. I, bound in cloth, Vol. II, Parts 1-5 unbound, in the original paper covers, in good condition, complete to date . . . . . . . . . . . . . . 5
  - The Natural History of British Butterflies and Moths, by Newman . . 0
  - Complete Set of the Transactions of the Royal Microscopical Society, consisting of :—
  - The Microscopical Journal and Quarterly Journal of Microscopical Science, Volumes 1 to 8, 1853-1860.
  - Quarterly Journal of Microscopical Science, new series, Volumes 1 to 8, 1861-1868.
  - Monthly Microscopical Journal and Transactions of the Royal Microscopical Society, Volumes 1 to 18, 1869-1887.
  - Journal of the Royal Microscopical Society, 1878-1931, bound; 1932-1933, unbound.
  - Price for the lot .. .. . . .. . . . . .. . . 70
  - Journal of the Quekett Microscopical Society, second series, Volume 1, 1882 to the end of 1932 inclusive
  - Pharmaceutical Journal, 1885, 1886, 1888-1906, in all, 21 volumes, bound in cloth ..
  - British Marine Algae, by Harvey
  - History of the Infusoria, including the Desmidieae and Diatomaceae, by Andrew Pritchard, good condition, 1861 edition History of the Infusoria, including Desmidieae and Diatomaceae, by Andrew Pritchard, 1861 edition, broken cover Hoole’s Van Leewenhoek, Vol. II, 1807. Illustrated British Marine Polyzoa, by Hinks, 2 vols.
  - Entomology, by Kirby and Spence
  - Encyclopaedia of Poultry, by J. T. Brown, 2 vols., post is.
  - Our Place Among the Infinities, by Proctor Outline of Science, by Prof. J. A. Thomson, 2 vols.
  - Marvels of Pond Life, by Slack, fourth edition, 1880 Story of the Heavens, by Sir R. Ball
  - Microscopic Objects : How to Mount Them, by Johnson The Ocean World, by Figuier .. .. . .
  - The Branch Builders, by J. G. Wood Wright’s Book of Poultry, by Lewer, 1911 With Nature and a Camera, by Richard Kearton
  - Manual of the Mollusca, being a treatise on recent and fossil shells, by Woodward
  - Micrographic Dictionary, by Griffiths and Henfrey, 1856 edition Microscopic Pratique, par G. Deflandre Modern Microscopy, by Cross and Cole, 1903 Manual of the Infusoria, by Saville Kent, 3 vols.
  - Natural History, by P. Martin Duncan, published by Cassells, in 5 vols. Contributions to the Biology of the Rotifera, Part 2 : Periodicity and Sexual Periods, by C. Wesenberg-Lund, 1930 British Zoophytes, by G. Johnston, 1847, 2 vols History of British Zoophytes, by George Johnston, 1838 Monocular and Microscopic Science, Somerville, 1869, Vols. 1 and 2 .. Elements of Embryology, Foster and Balfour, 1898 Popular Astronomy, Newcomb, 1890 With Nature and a Camera, Kearton, N.D.
  - The Moon Element, Fournier D’Albe The Microscope, Lardner
  - Monographia Anoplurorum Britanniae, coloured plates, 1842, very scarce
  - Microscopic Cabinet, Pritchard and Goring, coloured plates, 1832, very scarce
  - 30
  - 2
  - 0
  - 3
  - 1
  - 2
  - 1
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 7
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - (22 )
  - s. d.
  - 10 0
  - 0 0 4 0
  - 0 0
  - 0 0
  - 2 0 10 0
  - 10 0
  - 15 0 0 0 10 0 2 6 7 6
  - 3 0 15 0
  - 4 0 7 6 2 0 2 6
  - 1 3
  - 5 0 5 0
  - 1 6 10 0 9 0 3 6 10 0 10 0
  - 10 0
  - 15 0 3 6
  - 2 6 2 0
  - 5 0 2 6
  - 6 0 1 0
  - 16 0
  - 0 18 0
- p.22 - vue 22/24
- - s. d.
  - BOOKS—(<oontd.) £
  - Microscopic Illustrations of Living Objects, by Pritchard and Goring,
  - 1838, very scarce . . . . . . .. .. .. .. 0 10
  - Infusoria, Living and Fossil, Pritchard, 1845, 1st edition, with illustrations . . . . . . . . . . .. .. .. . . 15
  - British Zoophytes, Johnston, 2 volumes bound in one, 2nd edition,
  - 1847, profusely illustrated . . . . . . . . . . . . 1 15
  - Insects Abroad, J. G. Wood, 1883 . . .. . . . . ..07
  - Diseased Germs : Their Nature and Origin, L. S. Beale, 1872, autographed .. . . . . .. .. . . .. ..02
  - The Story of the Heavens, Sir Robert Ball, 1892 . . . . . . 0 15
  - Comparative Embryology, F. M. Balfour, 2 volumes, 1881 .. . . 0 7
  - Animal Life and the World of Nature, Vol. 1, published Hutchinson,
  - 1902 .. . . .. .. .. .. .. . . ..03
  - Nebula to Man, H. R. Knipe, autographed, 1905 . . . . . . 11
  - Nature and Sport in Britain, H. A. Bryden .. . . .. . . 0 2
  - Zoology, Shipley and McBride, 1901 . . .. .. . . . . 0 7
  - The World and the Sea, The Rev. H. M. Hart, N.D., well illustrated . . 0 5
  - Genesis of Species, Nivart, 1871 . . .. .. .. .. .. 0 1
  - Expression of the Emotions, Darwin, 1890 . . . . .. . . 0 1
  - Manual of Botany, R. Brown, 1874 . . .. . . .. ..01
  - Forms of Animal Life, Rolliston, 1871.. .. .. .. ..0 5
  - Natural History of the British Entomostraca, Baird, Ray Society,
  - 1870 . . .. . . .. .. .. .. .. .. 1 10
  - Natural Selection, Wallis . . . . . . . . . . . . ..01
  - Natural History of Ants, Huber, 1820 . . . . . . . . . . 0 5
  - Cryptogamic Botany, Berkeley, 1857 .. .. .. .. .. 0 2
  - Practical Biology, Huxley and Martin, 1889 .. .. .. .. 0 1
  - Through a Pocket Lens, Henry Sherren, 1904 . . . . . . . . 0 1
  - The Story of Evolution, by Joseph McCabe . . . . . . . . 0 4
  - Television, Alfred Dinsdale, A.M.I.R.E. . . . . . . . . ..03
  - Wireless Pictures and Television, T. Thornbaker . . . . . . 0 3
  - Common Objects of the Microscope, Rev. J. G. Wood . . . . . . 0 2
  - Fresh and Salt Water Aquarium, Rev. J. G. Wood. This book is rare
  - and much sought after . . . . .. .. .. . . 0 12
  - Practical Television, E. J. Larner . . . . .. . . . . ..02
  - Micrographic Dictionary, Griffith and Henfrey, 1875 .. . . . . 11
  - Collection Nachet. An illustrated description of the famous collection of Microscopes, Binoculars, etc. This book is an encyclopaedia of early microscope design and development , . .. .. .. 0 7
  - 6
  - 0
  - 0
  - 6
  - 6
  - 0
  - 6
  - 6
  - 0
  - 6
  - 6
  - 0
  - 6
  - 0
  - 0
  - 0
  - 0
  - 0
  - 0
  - 6
  - 0
  - 6
  - 0
  - 0
  - 0
  - 0
  - 6
  - 6
  - 0
  - 6
  - OTHER BOOKS AVAILABLE
  - Arachnoidiscus, by Dr. N. E. Brown, a monograph on one of the most beautiful and interesting of the large family of the Diatomaceae, written by an expert
  - Common Objects for the Microscope, by Rev. J. G. Wood, an extremely useful and well-illustrated little book. Some of the plates contained therein are most attractively coloured
  - Microscopic Objects. How to Mount Them, by J. C. Johnson.
  - ‘An informative work on the various methods and formulae used in the preparation and mounting of a wide range of microscopic objects
  - The Beginner’s Guide to the Microscope, by Heath. A most useful and well-written book for the young student of microscopy. Revised 3rd edition
  - The World Beneath the Microscope, by W. E. Watson-Baker, a spectacular production, primarily intended for the layman, showing over one hundred photographs in black-and-white, very highly magnified, of interesting and beautiful microscopic objects. A unique work
  - £ s. d.
  - 0 6 0
  - 0 3 6
  - 0 3 6
  - 0 2 0
  - 0 5 0
  - ( 23 )
- p.23 - vue 23/24
- - OTHER BOOKS AVAILABLE (canid)
  - The Origin and Development of the Microscope, by Disney, Hill, and Watson-Baker.
  - In this volume an attempt has been made to survey the pi ogress, from earliest times, of the optical ideas pertinent to the evolution of instruments of vision, special notice being given to the development of the microscope, and the investigation has been brought down to A.D. 1673. The period reviewed covers some 2,000 years, beginning with mention of the writings of Euclid (300 B.C.), continuing with reference to the Arabian opticians of the ninth to the eleventh centuries A.D., and on through the ages, closing with an account of Joannes Hevelius’s work, the “ Machina Coelestis,” which was published in Danzig in 1673.
  - The second portion of the volume is occupied with a catalogue and illustrations of the instruments in the possession of the Royal Microscopical Society, together with a bibliography of the original authorities to be found in the library of that Society.
  - The 303 pages of this book are filled with much that is of interest to the micro-scopist, and although originally published at 17s. 6d., is offered to Watson’s customers at the special price of 5s. Od.
  - The Microscope. How to Choose and Use It, by Dowdy.
  - This book was written in 1921 as an introductory wrork on the subject, in an endeavour to include only information needed for the actual working conditions and to express that information as free from technicality as possible. It is divided into eight chapters : (1) Lenses and the Origin of the Microscope, (2) The Simple Microscope, (3) The Compound Microscope, (4) The Optical System of the Microscope, (5) The Substage Condenser, (6) How to Use the Microscope, (7) Preparation and Mounting of Micro Objects, (8) Photography with the Microscope. Originally published at 5s. 6d., it is offered for 2s. Od.
  - ANATOMICAL MODEL
  - (New, made of Papier Mache.) £ s. d.
  - Human Female Pelvis, natural size, with ligaments . . . . . . 2 12 6
  - MICROSCOPIC OBJECTS
  - £ s. d.
  - Group of 65 Diatoms, symmetrically arranged, by Suter . . ... 050
  - Butterfly Scales, arranged as a bouquet of flowers, and sundry flies, by
  - Dalton . . . . .... . . . . . . 1 10 0
  - Group of Flower Seeds, opaque mount ... . . . . . . 0 2 0
  - Selected Butterfly Scales, arranged in small floral design, by Firth . . 0 7 6
  - Selected Butterfly Scales, arranged in small geometric design, by Firth 0 7 6
  - Group of Too Diatoms from Africa, by Watson .. .. .. .. 012 6
  - Group of xoo Diatoms from Simbirsk, bjr Watson . . . . . . 0 12 6
  - Preparation of Isatine for Polariscope, by Clarke and Page . . . . 0 1 6
  - Foraminifera, arranged in a small group .. .. .. .. ..020
  - Gall-Fly, Trypeta Winthemi, female, by Enock, in balsam . . . . 0 16
  - Wood Spider, Clubiona, female, by Enock, in balsam . . . . . . 0 16
  - Wood Spider, Philodromus, male, by Enock, in balsam . . . . 0 16
  - First Leg of a Solitary Bee, Megachile, male, by Enock, mounted in
  - fluid .. .. .. .. •• •• ..016
  - Head of Gnat, Anopheles maculipennis, male, in balsam, by Enock . . 0 1 6
  - In addition to the large stock of Microscopic Objects as detailed in Part 3 of the Catalogue, W. Watson & Sons, Ltd., have also a good number of second-hand slides, comprising Zoology, Geology, Histology, Opaque Mounts, etc. All the slides are in good condition, and are mostly the work of well-known mounters. Selections of slides are willingly sent on approval, on receipt of a deposit to their value. Should, however, the microscopist have an account with us, no remittance need be sent. Price of second-hand slides, 6d. each. (No list of these is available.)
- p.24 - vue 24/24