SCIENCE 



New Series. 



Vol. VIII. No. 198. 



FrTDAV OpTOTiPP 14 18Q8 single copies, 15 cts. 



JKIJJAY, W01UliJj.K 1% 10£>0. Annual Subscription, $5.00. 



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111 iiiiiijiiiiiiiiiiiiiiipiii 



No. 3. 



Chemical Apparatus 



AND CHEMICALS. 



Queen & Co.'s No. 3 Analytical Balance has agate bearings and knives, short 

 aluminum beam, a capacity of 200 grms., a sensibility of ^m m. g., and sells for 

 $55.00. A splendid^instrument for students' use. 



Queen & Co., inc., 



. . . Optical and Scientific Instrument Works, . . . 



New York Branch; 59 Fifth Ave. IQIQ CHESTNUT ST., PHILADELPHIA. 



