SCIENCE 
NEW SERIES. SINGLE COPIES, 15 cts. 
VOL, XIII. No. 333. Fripay, May ds 1901. ANNUAL SUBSCRIPTION, $5.00. 
Chemicals ana Chemical, Physical ana 
Bacteriological Apparatus 
(See also KOHL’S Advertisement on Page 5.) 
German and Bohemian Glassware 
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Analytical Balances and Weights 
MICROTOME, MINOT’S IMPROVED FORM 
Furnishing Sections of 4=40 Microns 
Incubators, Sterilizers, Laboratory Distilling Apparatus 
AGENTS FOR 
CARL ZEISS’ MICROSCOPES, etc. (the best European) 
SPENCER’S MICROSCOPES (the best American) 
EIMER & AMEND, *isi"sixei New York<~ 
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Yationa 
