236 



L. CASELLA'S CATALOGUE 



O 







2826. Armillary Spheres. The armillary sphere is a skeleton of the celestial globe. 



It contains the earth, fixed on its axis in the centre, the sun and the moon. 

 It serves to explain the phenomena of night and day ; 12 inch., on high maho- 

 gany stand, 6 6s. ; ditto, on low mahogany frame . . 550 



The globe in the centre representing the earth is 3^ inches in diameter. 



2827. A MODEL OF THE MOON, 4 inch, in diameter, on pedestal . 4 



2828. Quadrants of Altitude^ 18 inch., 6s. 6d. ; 16 inch., 5s. ; 12 inch., 3s. 6d. ; 



inch., 3s.; 6 inch. . . . . . . 02 



2829. QUADRANTS for the cheap school globes, with iron rings, 16 inch., 4s. 6d. ? 



12 inch ........ 026 



2830. LEATHER CLOTH COVERS FOR GLOBES, high stand, per pair, 18 inch., 1 10s. ; 



16 inch. 1 7s. 6d. ; 12 inch., 17s. 6d. ; low stand, per pair, 18 inch., 1 Is. ; 

 16 inch., 1 Is. ; 12 inch. . . . . . 15 



Brown Holland covers at lower prices than the above. 



2832. Orrery^ complete, I7i inch, zodiac, showing the planets and their satellites r 



the diurnal and annual motions of the earth, revolutions of the moon, Mercury, 

 Venus, and all the planets, with rack motion, in case, complete 10 10 O 



2833. PLANETARIUM, 174 inch., the earth, moon, and two planets only having rack 



motion . . . . . . . 550 



2834. DITTO, DITTO, as above, the movements being without rack . 3 13 ft 



2835. ORRERY, on 13^ inch, zodiac, showing the earth, sun, the moon with its phases ; 



Mercury and Yenus, a lamp and gilt ball are used to represent the sun (one by 

 night the other by day), it has rack and winch movement, carefully calculated 

 to time ; the earth revolving in the proportion of 1160 miles per minute ; 

 in case, complete . . . . . . 4 10 



2836. THE ORDNANCE MAPS OF ENGLAND AND WALES, at 2s. 6d. per sheet ; half 



sheet, Is. 9d. ; quarter sheet . . . . . 010 



2837. THE ORDNANCE MAPS OF LONDON, per sheet . . . 010 

 All other maps and charts published by the Ordnance and Admiralty departments supplied 



to order. 



PIG. 2889. 



DRAWING MATERIALS, PAPERS, AND 

 TRACING CLOTHS, 



Of best quality, and at the prices charged by the manufacturers ; other kinds or makes 

 are supplied to order on the same terms. The prices are nett, but on large quantities 

 discount is allowed in proportion to the extent of the order. 



