24 BBNJ. PIKE'S, JR., PRICE CATALOGUE. 



No. 



535 Fig. 381, Farraday's apparatus for showing 

 an electrical current independent of the 

 contact of dissimilar metals, - $ 2.00 



536 Fig. 382, pair of circular zinc and copper 



plates, with glass handles, - - 2.00 



537 Fig. 383, Cruikshank's trough battery, set 



of 20 pairs, . - 12.00 



538 Fig. 384, ditto, set of50 pairs, 30.00 



539 Fig. 385, galvanic battery, set of 12 pairs, 10.00 



540 Fig. 386, Hare's deflagrator, set of 100 pairs, 100.00 



541 Fig. 387, Hare's calorimeter, set of 20 pairs, 



$15 to 40.00 



542 Figs. 388 and 389, Wollaston's galvanic bat- 



tery, set of 50 pairs, - - 50.00 



543 Fig. 390, Van Melsen's galvanic battery, set 



of 25 pairs, - 20.00 



544. Fig. 391, cylindrical pot battery, large size, 2.50 



545 & 6 Cylindrical pot battery, second size, 1.75 



small size, - - 1.50 



547 Fig. 392, Daniel's single-cell sustaining bat- 



tery, - - 1.75 



548 Figs. 393, 394, 395, Peron's cells for sus- 



taining batteries, - each 25cts. 13cts. and 0.10 



549 Leather cups for sustaining batteries, <fec. - 0.50 

 550 Fig. 396, Daniel's six-cell sustaining battery, 12.00 



551 Fig. 397, Daniel's ten-cell sustaining battery, 25.00 



552 Fig. 398, improved four-cell sustaining bat- 



tery, for plating - - 7.00 



553 Fig. 398, improved three-cell sustaining bat- 



tery for platina, - 5.25 



554 Fig. 399, Smee's battery (zinc and platinized 



silver), - - 2.25 



555 Fig. 399, Smee's battery, extra large, 5.00 



556 Fig. 400, Grove's battery (amalgamated zinc 



and platina), 



557 Set of four, small size, $4.50 ; medium size, 5.50 



large size, - 6.50 



558 Fig. 401, set of six, small size, $6 ; medium 



size, $7.50 ; large size, - - 9.00 



559 Fig. 400, set of twelve, small size, $12 ; me- 



dium size, $15 ; large size, - 18.00 



660 Fig. 400, set of eighteen, large size, - - 27.00 



