SCIENCE 



Nbw Series 



Vol, XLIII. No. 111)7 



Friday, March 17, 1916 



Single Copies, 16 Cts. 

 Annual Subscription, fb.OO 



The Freas' Electric Incubator 



Endorsed by eminent users as the most satisfactory 

 and reliable electric incubator. 



No attention whatever required. 



It can be relied upon absolutely for continuous un- 

 attended operation. 



Wriie for literature 

 A prominent user Turites: 

 " Concerning the Freas' Electric Incubator in operation in onr Bacteriological 

 Laboratory, I wish to state that for accuracy and ease of regulation, dnrability 

 and reliability for continnons operation, it has proven to be all that can he de- 

 sired, and entirely satisfactory for our use. We consider it one of the best pieces 

 of workmanship in the laboratory. 



EIMER AND AMEND 



Founded 1851 



INDUSTRIAL AND EDUCATIONAL LABORATORY APPARATUS 



CHEMICALS AND DRUGS 



NEW YORK 



N. Y. 



PITTSBURGH 



PA. 



