SCI 



NSW Series. 



Vol. XII. No. 312. 



Friday, December 21, 1900. 



Single Copies, 16 cts. 

 Annual Subsceiption, 85.00. 



Chemicals and Chemical Apparatus 



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Excellently adapted for pondlife 

 studies, observation of vegetable 

 growth, and of small crystab em- 

 bedded in other minerals, etc.; fur- 

 ther specially adapted for the delicate 

 preparation of objects too large to be 

 handled on microscope stages, J* iM 



COMPLETE 

 LABORATORY OUTFITS S 



GREENOUGH'S MICROSCOPE 



EIMER & AMEND, New York 



DEC S4 1900/ 



