AUGUST, 1852. 



CATALOGUE 



APPARATUS AND MATEEIALS, 



FOR 



ELECTROTYPE PROCESSES, 



ON SALE BY 



JOHN JOSEPH GRIFFIN & CO., 



53 BAKER-STREET, LONDON; 



AND 



KICHAKD GRIFFIN & CO,, GLASGOW. 



%* As the prices of METALS are subject to constant changes, it is necessary to 

 remark, that at all times, the articles will be charged according to the lowest 

 market price of the Metals. 



The Materials are sold by AVOIRDUPOIS weight. 



DANIELL'S BATTERY, (fig. 13), 



Half-pint size, 5s. ; Pint do. 7s. 6d.; Quart do. 9s. 

 Set of Six Half-pint Daniell's Batteries, mounted on a mahogany tray (fig. 



14), price 11. 10s. 



Set of Six Pint Daniell's Batteries (fig. 14), 21. 5s. 

 Set of Ten Quart Daniell's Batteries, 41. 10s. 

 SMEE'S BATTERY (fig. 18), Pint size, in round glazed pots, 7s. 

 Do. Quart size, 10s. Qd. 



Set of Six Smee's Batteries, in mahogany tray (fig. 19), 21. 5s. 

 Set of Six Smee's Batteries, mounted on a frame, so as to be readily lowered 



or raised out of their respective calls (fig. 20), 31. 10s. 

 GROVE'S BATTERY, in a glass cell, with porous Tube, Zinc Plates, and Brass 



Connectors, 12s. 



Set of Eight Grove's Batteries, in mahogany tray (fig. 17), 51. 5s. 

 Brass Binding Screws: Fig. 21, 6dL; 22, lOd; 23, 8c?.; 24, 9d; 25, M. ; 



26, Is. 4d. each. 



Galvanometer, on stand (fig. 27), 10s. 

 Galvanometer, with Asiatic Needles suspended by a fibre of silk, the Coil on 



Brass Frame, with Levelling Screws and Glass Shade (fig. 28), 30s. 



