SCI 



t^EW Series 



Vol. XXXVI. No. 



Feiday, December 20, 1912 



Single Copies, 15 Cts. 

 A^HUiL Subscription , $5.00 



Read what users say about 



The Freas Oven 



Electrically heated and Controlled 



The Pathologist of a large Eastern hospital us- 

 ing the oven for chemical drying, incubating, etc.: 



" We are very well satisfied with the Freas Electric Oven 

 which we have been using in this laboratory for some 

 months. It has proved to be very useful for a widevariety 

 of purposes, the regulating device keeping the tempera- 

 ture constant well within one dcRree ; it is one of the 

 most valuable pieces of laboratory apparatus with which 

 I have had any experience. ' ' 



The Professor of Chemistry of a State Institution: 



"Now that I have had the Freas Oven in my laboratory 

 for a month, I do not see how I could get along without 

 it. I can hardly see how it would be possible to con- 

 struct anythingthat would be nearerperfection. Within 

 the next two wreks, I shall order one or two No. 110 for 

 use in our Quantitative Department." 



The oven is easily set for the temperature desired by moving the indica- 

 tor as shown in this illustration. Contrast this with the time required to set a 

 mercury or other regulator of the most advanced type : the continuous watching required 

 on account of the uncertainty) of its proper and accurate operation. 



No. C-100 



Some advantages of the Freas Oven— Reliable— Durable— Accurate to well within 1 ° C. 

 Numerous Uses — Constant temperature drying for all analytical purposes up to 1 75° C. and above 

 if necessary. Can be used as a combination drying oven, incubator and drying sterilizer. 



Write to-day for descriptive matter to the sole distributors 



EIMER & AMEND 



NEW YORK 



205-211 Third Avenue 



Headquarters for Industrial and Educational Laboratory Supplies 



PITTSBURGH 



8035 Jenkins Arcade Bldg. 



