Prize Medal, 1851. Honourable Mention, Paris, 1855. 



TWO 



PRIZE MEDALS. 

 1862. 



FIG. 1768. 



THE OXY-CALCIUM LIGHT. 



$. Negretti and Zambra would call especial attention to the Oxy-Calcium 

 Light, which, at a trifling advance on the expense of the best Argand Oil lamps, 

 gives a light very nearly equal to the Oxy-hydrogen Light. It is perfectly safe, 

 easily managed, and occupies small space; very cleanly in use, all grease and smoke 

 being avoided. With the Oxy-Calcium Light a brilliantly illuminated disc may be 

 obtained 14 to 16 feet diameter. 



1765 A best Phantasmagoria Lantern, with 3|-in. Condensing Lenses, 

 with Hackwork Adjustment to front Lenses, fitted with the 

 Oxy - Calcium Light. Apparatus for making the Oxygen gas, 

 Gas Bag, and Pressure Board, Conducting tube, &c., complete; 



in box 



A ditto ditto with four 4-inch Condensing Lenses, &c., com- 

 plete ; in box 



1766 



a. d. 



990 



11 11 



