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- TABLE DES MATIÈRES
- TABLE DES ILLUSTRATIONS
- RECHERCHE DANS LE DOCUMENT
- TEXTE OCÉRISÉ
- Première image
- PAGE DE TITRE
- Preface to the third edition (p.R2)
- Contents (p.R3)
- Introduction (p.5)
- The various forms of telescopes. Their construction and advantages (p.7)
- Refracting telescopes (p.11)
- Stands for indirect-vision reflectors (p.31)
- Equatorial adjustments (p.41)
- To silver and polish glass specula (p.49)
- Apparatus (p.49)
- To support the Mirror in the Silvering Vessel (p.50)
- To clean the mirror (p.51)
- To immerse the mirror (p.51)
- To prepare the Silvered surface for polishing (p.52)
- To polish the Silvered surface (p.53)
- To separete the Mirror from the Wooden Support (p.54)
- Martin's process of silvering (p.54)
- Dr. Henry Draper's formula for silvering (p.56)
- The sugar of milk process for silvering (p.56)
- General, hints on silvering (p.57)
- Accessories to the telescope (p.58)
- Observatories (p.66)
- Defining and separating tests (p.78)
- Light tests (p.79)
- Catalogue of reflecting and retracting telescops and their accessories (p.81)
- Achromatic perspective glasses (p.81)
- Achromatic opera glasses (p.81)
- Achromatic field glasses (p.81)
- Achromatic telescopes (p.83)
- Horne and thornthwaite's binocular telescopes (p.83)
- Refracting telescopes for astronomical purposes (p.84)
- Astronomical object glasses (p.87)
- Astronomical reflecting telescopes (p.89)
- Silvered-glass specula (p.93)
- Silvered-glass diagonal mirrors (p.93)
- The “romsey” observatory (p.93)
- Silvering and polishing specula (p.94)
- Apparatus for silvering (p.94)
- Set of silvering apparatus (p.94)
- Astronomical eye pieces (p.95)
- Solar eye pieces (p.95)
- Micrometers (p.95)
- Astronomical spectroscopes (p.96)
- Trabsit instruments (p.96)
- Works on astronomy (p.96)
- Dernière image
- Première image
- PAGE DE TITRE
- The german equatorial stand (p.17)
- The victoria equatorial (p.18)
- The alt-azimuth stand (p.32)
- Horne and Thornthwaite's equatorial reflector (p.34)
- Horne and Thornthwaite's portable equatorial reflector (p.35)
- The berthon equatorial (p.38)
- The berton equatorial (p.39)
- The victoria equatorial telescope (p.85)
- Berthon patent equatorial stand (p.90)
- The alt-azimuth stand (p.92)
- Binoclar microscope (p.97)
- Dernière image
HORNE & THORNTHWAITE’S
The Lecturer’s Set of Oxycalcium Dissolving View Apparatus, of first-class manufacture, mahogany body Lantern, with handsome brass fronts, 4-inch condensers ; Fountain Oxycalcium Lamp: Gas Bag, Pressure Boards; Oxygen Retort and Purifier, Conducting Tube; and with supply of Lime Balls and Oxygen Mixture, with full directions for use. £21.
The School Set of Oxycalcium Dissolving View Apparatus, with Lanterns having 3^-inch condensers, and the extra apparatus as above described. £14 14s.
School Set of Dissolving View Apparatus, fitted with Argand Fountain Oil Lamps, 3^-inch condensers. £8 8s.
Phantasmagoria Lantern, 3^-inch condensers, with Argand Fountain Oil Lamp, for showing 3-inch Pictures. £3 3s.; Ditto with rackwork adjustment, £3 10s.
Oxycalcium Apparatus, fitted to ditto, £5 extra.
Microscope attached to any of the foregoing instruments for showing live insects, sections of woods, &c., £2 2s. extra.
An endless variety of Photographs and Hand-Painted Slides can be had to fit any of the above Lanterns.
fjhotcpajjlm and oilw j$Ikhz for t\u Santurn, as —
Continental Photographs, each coloured, 4s. 6d. ; uncoloured, 2s.
Scripture, London, and Natural History, each, coloured, 4s. ; uncoloured, is. 6d.
Lever Slides, 6s. each. Comic Transformations, 2s. each.
Chromatropes, 10s. 6d. each. Natural Phenomena, 6s. 6d. each.
Pictures for the Dissolving Views, comprising the Holy Land—The Overland Route to India—The Mill at Llanrwst—The Ship—The Seasons—Mount Vesuvius—Mount Etna—Tower of London— The Old and New Royal Exchange—The Arctic Expedition—Patterdale Bridge—Water Mill— Ascent to Mont Blanc—The Turk'o-Russian War, &c.
Magic Lantern of japanned tin, with brass sliding tube, lamp and reflector, giving a clear picture of
3- feet in diameter, 5s. Set of Slides for ditto, 4s.
Magic Lantern of japanned tin, with brass sliding tube, lamp and reflector, giving a clear picture of
4- feet in diameter, 7s. 6d. Set of Slides for ditto, 7s. 6d.
Magic Lantern of japanned tin/ with brass sliding tube, lamp and reflector, giving a clear picture of 6-fee;t in diameter, 10s. 6d. Set of Slides for ditto, 10s. 6d.
Magic Lantern of japanned tin, with brass sliding tube, lamp and silvered reflector for producing a picture 8-feet_in diameter, ,£1. Set of Slides for ditto, £1.
Improved Magic Lantern of japanned tin, with brass sliding tube, argand lamp, and silvered reflector, for producing a clear picture ,9-feet in diameter showing 2g-inch pictures, in case, £r los. r,f Slides for the above, £x ; ditto Astronomical ditto, £1 15s. ; Lever Slides, each, 4s. 6d.:
Set of
- - ... . Slipping
Comic, each 2s. ; Chromatropes,’each 10s. 6d. ; Natural Phenomena, each 4s. 6d.
Dissolving Viezv Apparatus and Slides sent out on hire, and Demonstrators supplied to ~ manage the Exhibition. Terms on Application.
Further Particulars, see complete Catalogue of Dissolving View Apparatus.
HORNE & THORNTHWAITE, Opticians to the Queen,
416, STRAND, LONDON.
FOUR DOORS WEST OF THE ADELPHI THEATRE. â– *, ‘
Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 96,77 %.
La langue de reconnaissance de l'OCR est l'Anglais.
The Lecturer’s Set of Oxycalcium Dissolving View Apparatus, of first-class manufacture, mahogany body Lantern, with handsome brass fronts, 4-inch condensers ; Fountain Oxycalcium Lamp: Gas Bag, Pressure Boards; Oxygen Retort and Purifier, Conducting Tube; and with supply of Lime Balls and Oxygen Mixture, with full directions for use. £21.
The School Set of Oxycalcium Dissolving View Apparatus, with Lanterns having 3^-inch condensers, and the extra apparatus as above described. £14 14s.
School Set of Dissolving View Apparatus, fitted with Argand Fountain Oil Lamps, 3^-inch condensers. £8 8s.
Phantasmagoria Lantern, 3^-inch condensers, with Argand Fountain Oil Lamp, for showing 3-inch Pictures. £3 3s.; Ditto with rackwork adjustment, £3 10s.
Oxycalcium Apparatus, fitted to ditto, £5 extra.
Microscope attached to any of the foregoing instruments for showing live insects, sections of woods, &c., £2 2s. extra.
An endless variety of Photographs and Hand-Painted Slides can be had to fit any of the above Lanterns.
fjhotcpajjlm and oilw j$Ikhz for t\u Santurn, as —
Continental Photographs, each coloured, 4s. 6d. ; uncoloured, 2s.
Scripture, London, and Natural History, each, coloured, 4s. ; uncoloured, is. 6d.
Lever Slides, 6s. each. Comic Transformations, 2s. each.
Chromatropes, 10s. 6d. each. Natural Phenomena, 6s. 6d. each.
Pictures for the Dissolving Views, comprising the Holy Land—The Overland Route to India—The Mill at Llanrwst—The Ship—The Seasons—Mount Vesuvius—Mount Etna—Tower of London— The Old and New Royal Exchange—The Arctic Expedition—Patterdale Bridge—Water Mill— Ascent to Mont Blanc—The Turk'o-Russian War, &c.
Magic Lantern of japanned tin, with brass sliding tube, lamp and reflector, giving a clear picture of
3- feet in diameter, 5s. Set of Slides for ditto, 4s.
Magic Lantern of japanned tin, with brass sliding tube, lamp and reflector, giving a clear picture of
4- feet in diameter, 7s. 6d. Set of Slides for ditto, 7s. 6d.
Magic Lantern of japanned tin/ with brass sliding tube, lamp and reflector, giving a clear picture of 6-fee;t in diameter, 10s. 6d. Set of Slides for ditto, 10s. 6d.
Magic Lantern of japanned tin, with brass sliding tube, lamp and silvered reflector for producing a picture 8-feet_in diameter, ,£1. Set of Slides for ditto, £1.
Improved Magic Lantern of japanned tin, with brass sliding tube, argand lamp, and silvered reflector, for producing a clear picture ,9-feet in diameter showing 2g-inch pictures, in case, £r los. r,f Slides for the above, £x ; ditto Astronomical ditto, £1 15s. ; Lever Slides, each, 4s. 6d.:
Set of
- - ... . Slipping
Comic, each 2s. ; Chromatropes,’each 10s. 6d. ; Natural Phenomena, each 4s. 6d.
Dissolving Viezv Apparatus and Slides sent out on hire, and Demonstrators supplied to ~ manage the Exhibition. Terms on Application.
Further Particulars, see complete Catalogue of Dissolving View Apparatus.
HORNE & THORNTHWAITE, Opticians to the Queen,
416, STRAND, LONDON.
FOUR DOORS WEST OF THE ADELPHI THEATRE. â– *, ‘
Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 96,77 %.
La langue de reconnaissance de l'OCR est l'Anglais.