No. li-J 263. 



Galvano-plastic Arts. Galvano-plastics. 



949 



62 261. 1 : 4. 



62 262. 1 : 6. 



62 263. 1 : 7. 



8. d. 



(ii','258. Complete Apparatus for Silvering and Gilding, Figure, comprising: 1 Bunsen cell, 

 1 enamelled dish, copper wires, copper, silver and gold hath, brush for removing grease, 

 hand scratching brush, pumice stone, sawdust, scouring leather, and directions, in 

 lac(|ueivd box ................................. j 1. 5. 



(>2,ii5<). Complete Apparatus for Nickel-plating, Figure, comprising: 2 Bunsen cells, 

 1 glass trough 10x10x15 cm, 2 anode rods with clamping screws, 1 earthenware rod 

 with clamping screws, leads, piepared Nickel Salts, Nickel anodes and nickel hook, 

 brush for removing grease, pumice stone, sawdust, scouring leather, and directions, in 

 lacquered box ..................... ........... 1. 4. 



<;_', 2<<). -- idem, larger, with earthenware trough 20x20x20 cm ........... 1.15.0 



Electrolytic Rectifiers: see p. 863. 



Section 6: Electro-magnetism and Electro-dynamics. 



Deflection of the Magnetic Needle. 



fi2,261. Oersted's Apparatus for the Deflection of the Magnetic Needle by the Electric Current, 

 Figure (M. I'., !)'" Edn., Ill, Fig. 471 ; cf. Gan.-Man. Fig. 727; Gan.-Rein. Fig. 823), 

 with 2 magnetic needles 



til', 262. - - i d e m, different pattern, Figure 



The apparatus has i> terminals so as to allow the most varied parts of the rectangle to act on 

 the needles. 



62,263. Apparatus with two astatically arranged Magnetic Needles, Figure, for showing 



deflection bv the electric current 



s. d. 



0. 18. 

 0. 16. 



0. 18.0 



Cl. 2567, 



2568, 5966, 2570. 



