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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
94
5-inch
6 i „
H „
SILVERING AND POLISHING SPECULA.
£ s. d.
060 080 o 10 6
io-inch
I2i „ ........
Diagonal Planes ...
£ s. d. o 15 o 1 1 o
030
APPARATUS POR SILVERING, &c.
Page 49.
SILVERING VESSELS.
£ s. d. £ 5. d.
164 inch ... 1 0 0 10-inch 0 6 0
13 » 0 15 0 8| „ ... 0 4 6
” „ 0 7 6 H „ ... ... 0 3 0
GLASS MEASURES.
£ s. d. £ s. d.
40-oz. 0 5 0 5-oz. 0 1 3
1° „ ••• 0 2 0 2 ,, 0 0 10
Glass Funnels ... ... • •• 6d., gd., and 0 1 0
Filter Papers, for ditto per hundred 0 1 0
Polishing Pads, in stoppered bottles ... 0 1 6
Glass Rods ... . ... ••• ... 2d. and 0 0 3
Cotton Wool ... ,.j • •• ... per oz. 0 0 3
Test Tube ... ... ... 0 0 2
Flask ^ _ ... 3d., 6d., and 0 1 0
Boxes of Scales and Weights ... ... from 0 4 0
Spirit Lamp ... 0 2 0
Retort Stands ... from 0 3 6
Sand Bath ... ... ... 0 0 6
CHEMICALS.
Nitrate of Silver .. per oz. 0 s. 3 d. 8
Nitrate of Ammonia ... „ 0 0 3
Potash, pure, by alcohol (in stoppered bottle) ,, 0 1 4
Best Sugar Candy ,, 0 0 4
Tartaric Acid ... ,, 0 0 4
Alcohol ,, 0 0 4
Liquor Ammonise ,, 0 0 2
Sugar of Milk, powdered ,, 0 0 2
Tartrate of Soda and Potash (Rochelle Salt) „ 0 0 2
Distilled Water, pure... per gallon 0 1 0
Nitric Acid, pure ... ... per oz. 0 0 2
Pitch ... per lb. 0 0 4
Fine Rouge ... per bottle 0 1 0
Turpentine ... ... per pint 0 1 0
SET OF SILVERING APPARATUS.
Including dish and other apparatus, with sufficient chemicals to silver a—
6^-inch Mirror four times ... ... ... ...... ... ... 1 1 o
H „ „ ....................... .......... 1 5 0
10 „ „ ... ... ... ... ... ... ... 1 10 o
I2$ >< „ ..................................* 15 °
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 89,31 %.
La langue de reconnaissance de l'OCR est l'Anglais.
5-inch
6 i „
H „
SILVERING AND POLISHING SPECULA.
£ s. d.
060 080 o 10 6
io-inch
I2i „ ........
Diagonal Planes ...
£ s. d. o 15 o 1 1 o
030
APPARATUS POR SILVERING, &c.
Page 49.
SILVERING VESSELS.
£ s. d. £ 5. d.
164 inch ... 1 0 0 10-inch 0 6 0
13 » 0 15 0 8| „ ... 0 4 6
” „ 0 7 6 H „ ... ... 0 3 0
GLASS MEASURES.
£ s. d. £ s. d.
40-oz. 0 5 0 5-oz. 0 1 3
1° „ ••• 0 2 0 2 ,, 0 0 10
Glass Funnels ... ... • •• 6d., gd., and 0 1 0
Filter Papers, for ditto per hundred 0 1 0
Polishing Pads, in stoppered bottles ... 0 1 6
Glass Rods ... . ... ••• ... 2d. and 0 0 3
Cotton Wool ... ,.j • •• ... per oz. 0 0 3
Test Tube ... ... ... 0 0 2
Flask ^ _ ... 3d., 6d., and 0 1 0
Boxes of Scales and Weights ... ... from 0 4 0
Spirit Lamp ... 0 2 0
Retort Stands ... from 0 3 6
Sand Bath ... ... ... 0 0 6
CHEMICALS.
Nitrate of Silver .. per oz. 0 s. 3 d. 8
Nitrate of Ammonia ... „ 0 0 3
Potash, pure, by alcohol (in stoppered bottle) ,, 0 1 4
Best Sugar Candy ,, 0 0 4
Tartaric Acid ... ,, 0 0 4
Alcohol ,, 0 0 4
Liquor Ammonise ,, 0 0 2
Sugar of Milk, powdered ,, 0 0 2
Tartrate of Soda and Potash (Rochelle Salt) „ 0 0 2
Distilled Water, pure... per gallon 0 1 0
Nitric Acid, pure ... ... per oz. 0 0 2
Pitch ... per lb. 0 0 4
Fine Rouge ... per bottle 0 1 0
Turpentine ... ... per pint 0 1 0
SET OF SILVERING APPARATUS.
Including dish and other apparatus, with sufficient chemicals to silver a—
6^-inch Mirror four times ... ... ... ...... ... ... 1 1 o
H „ „ ....................... .......... 1 5 0
10 „ „ ... ... ... ... ... ... ... 1 10 o
I2$ >< „ ..................................* 15 °
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 89,31 %.
La langue de reconnaissance de l'OCR est l'Anglais.