274 BEXJ. PIKE'S, JR., DESCRIPTIVE CATALOGUE. 



75c. ; 469, magneto-electric machine for shocks and sparks, 

 19.50; 410, magnet, 75c. ; 418, star plate, 50c. ; 6 inch 

 magnetic needle with mariner's card, $1. $30.25. 



Chemistry. Fig. 514, retort stand, $1.50; 511, spirit 

 lamp, 7oc. ; 482, three flasks, 25c. ; 484, three assorted re- 

 torts, $1 ; 489, one receiver, 38c. ; 483, one matrass, 38c. ; 

 522, pneumatic cistern, $2 ; 481, two bell glasses, quart 

 and half-gallon, $1.25 ; stoppered gas bottle, half-gallon, 

 63c. ; 525, bell glass, with cap, stop-cock, jet, pipe, and gas 

 bag, $2.75 ; 540, gas pistol, 39c. ; 508, blowpipe, 38c. ; 

 500, dropping tube, 38c. ; 494, funnel, 15c. ; 512, mortar 

 75c. ; 507, evaporating dish, 38c. ; 509, nest of crucibles, 

 lOc. ; 495 grade measure, 63c. ; 237, scales and weights, 

 Si. 25 ; 493, two precipitating glasses, 31c. ; 502, three test 

 tubes, 15c. ; 504, air thermometer, 19c. ; Torricellian tube, 

 75c. ; 555, pyrometer, $3.50 ; 552, conductometer, $1.75 ; 

 556, condenser, $1 ; 542, eolopile, 38c. ; 543, boiling glass, 

 50c. ; 560, Wollaston's steam apparatus, $1.50; 540, hy- 

 drogen gas pistol, 38c. $25.59. 



Total, $150.00. 



Or, with the addition of the following, $250. 



Figs. 154, 155, 156, and 158, set of mechanic powers, 

 $16; 147, four and a half inch surveyor's compass, $14 ; 

 180, double barrel air pump, in place of single barrel air 

 pump, $22,50 ; 208, piston weight lifter, $6 ; 260, vessel 

 for spouting fluids, $4 ; 267 or 270, plate electrical machine, 

 in place of cylinder electrical machine, $25 ; 536, compound 

 blow pipe and pneumatic cistern combined, in place of pneu- 

 matic cistern, $8 ; 733 and 740, superior magic lantern and 

 set of astronomical sliders in place of magic lantern and 

 comic sliders, $35 ; 604, barometer, $10. 

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