MISCELLANEOUS INSTRUMENTS. 277 



of crucibles, lOc. ; two evaporating dishes, 72c. ; 512, mor- 

 tar, $1 ; 536, compound blow pipe with pneumatic cistern, 

 $8 ; 525, bell glass with cap, two stop-cocks, union, jet, 

 pipe, and gas bag, $4 ; 408, blow pipe, 38c. ; 539, hydro- 

 gen generator, $5 ; 540, hydrogen gas pistol, 38c. ; 541, 

 air balloon, $1.25; 542, eolopile, 88c. ; 547, pulse glass, 

 50c. ; 548, boiling glass, 50c. ; 546, flameless lamp, $1.50; 

 552, conductometer, $1.75; 555, pyrometer, $3,50; 556, 

 condenser, $1 ; 559, Marcett's steam boiler, $15 ; 560, 

 Wollaston's steam apparatus, $1.50 ; 549, chryopherus, 

 $1.75 ; 572, Woulfe's bottle, $1 ; bent glass tube, 25c. 



$79.81. 



Meteorological. Fig. 604, barometer, $10; 587, ther- 

 mometer with Fahrenheit and centigrade scales, $1.50 ; 591, 

 day and night register thermometer, $4 ; 619, Mason's 

 hygrometer, $5 ; 622, conical rain gauge, $2.50. $23.00. 



Set of minerals, 144 specimens, arranged in three trays 

 and mahogany box with lock, $12 ; set of geometrical 

 solids, $1.25. $13.25. 



Or, with the addition of the following, $1000. 



Fig. 130, astronomical telescope, $65 ; 757, solar micro- 

 scope, $50; 99, theodolite, $100; 176, Atwood's appara- 

 tus for laws of falling bodies, $100; 168 to 174, whirling 

 table and apparatus, $75 ; 455, bell engine, 12.00. 



VOL. ii. 24 



