No. 60684. 



Voltaic Electricity. Section 1: Galvanic Sources of Supply. 



839 



60 682. 1 : 2. 



60 680. 1 : 5. 



60 684. 1 : 6. 



60 683. 1 : 4. 



Voltaic Electricity. 



Section I: Galvanic Sources of Current. 



Apparatus for demonstrating Potential Drop along a Conductor traversed by a Current gene- d. 

 rated by means of an Influence Machine or an Electric Machine: see Nos. 60,541 and 

 60,542 on p. 826. 



60.680. Bow-shaped Joint of Copper and Zinc, for Galvani's Experiment on the frog's leg, 

 Figure (M. P. 10 th edn., IV, 1, p. 315; 9 th edn., Ill, p. 326; Gan.-Man. Fig. 690; 

 Gan.-Eein. Fig. 802) 0. 3. 



Accessories for the Voltaic Fundamental Experiments as 



suggested by Noack. 



(Ztschr. z. Ford. d. phys. U. 1885, p. 177, cf. also Gan.-Man., p. 757.) 



60.681. 2 Zinc Plates, 80 mm diameter, quite plane, 1 varnished on one side, the other metallic; 

 2 similar Copper Plates, 2 Handles for these plates ; 1 Flexible, Circular Copper Strip and 



1 Zinc Strip, with ebonite handles; 1 Mica Disc, 160 mm diameter, and an 80 mm Cloth Disc. 



As regards an electrometer for No. 60,681 we can recommend No. 60,704, or, better 

 still, No. 60,705. 



60.682. 3 Copper and 3 Zinc Plates and 2 insulating handles for the Fundamental Voltaic Ex- 

 periment, as suggested by Grimsehl, Figure, for use with Grimsehl Electrometer 

 No. 60,202, or any other sensitive leaf electrometer (M. P. 10 th edn., IV, 1, p. 320). 



2 Copper Plates and 1 Zinc Plate are lacquered, the remaining plates being bare. . 1.10.0 



60.683. Lead Base, Copper and Zinc Strips, Leather Disc and Beaker, for carrying out the 

 experiments as in Fig. 60,683 with plates 60,682 (M. P. 10 th edn., IV, 1, Fig. 288) . 1. 0. 



60.684. Volta's Pair of Plates with magnetic needle, Figure i 0.-16. 



1. 8.0 



Cl. 3456, 5683. 

 5561, 56S1. 



