NEW SsRIES. SINGLE COPIES, 15 crs, 
VoL. XIII. No. 316. FRIDAY, JANUARY 18, 1901. ANNUAL SUBSCRIPTION, $5.00. 
Chemicals «« Chemical Apparatus 
These are Spectmens 
of the 
High-Grade 
Scientific 
Glass Blowing 
SELLING AGENTS FOR 
CARL ZEISs’s IVIicROSCOPES AND ACCESSORIES 
Done on Out 
Premises 
aod VOVNVS GNV “V'S‘N 40d SINHDV ATOS 
Used extensively in the Laboratories of the U.S. Government 
| PHEPUPIG SE JUDUTUTOACD *S *() 243 Ag paydope UOISTA JO pjatq aaa Lid Hib, 
SHdOOSIAVIOG SHOSNAVE] 29 LaIWHOS ZNVug 
No. 5192 A 
BOILING POINT APPARATUS according to Dr. B, H. HITE 
A thermometer READING TO ONE THOUSANDTH OF A DEGREE, SHOWS NO VARIATION 
in the temperature of a liquid in the tube 
No. 8828 A. PIPETTE according to ROTHE, for the rapid estimation of IRON by means of ETHER 
EIMER & AMEND, tis"svece New York 
