= Notice to Reader.—When you finish reading Q 0 
this magazine, place a 1 cent stamp on this notice, 
mail the magazine, andit will be placedin the 
hands of our soldiers or sailors destined to pro- 
ceed overseas. No wrapping—-No Address. A+ 
S. Burleson, Postmaster-General. 
SCIENCE 
Naw Suxizs SmveLEe Corres, 15 OTs. 
Vou. XLVIII No. 1242 Fripay, OcroBER 18, 1918 ANNUAL SUBSCRIPTION, $5.00 
Freas Electric Ovens 
ree ee 
Zo \thsoniay i> 
TYPE ‘RV’ FREAS OVEN 
This is the regular No, 100 Freas Oven, with removable vacuum chamber. 
Those possessing this oven can derive all [the advantages of| drying in vacuo—advantages 
which are becoming better understood daily—and can furthermore, by removing the vacuum 
chamber, use the oven for ordinary constant temperature drying. , 
The oven chamber is 12X12 12 inches above the heating plate; the interior measure- 
ments of the vacuum chamber are 9-inch diameter X9 inches deep, Price. . . . + + + $215.00 
As General Sales Agents for the Freas line we have the following new booklets for 
distribution: 
Freas Electric Vacuum Ovens Freas Electric Tube Furnaces 
Freas Electric Ovens (regular) Freas Electric Thermostats and Water Baths 
Freas Electric Conditioning Ovens Thelco Incubators and Ovens 
Freas Electric Incubators and Sterilizers Thelco Low Temp Incubators 
Write us for copies of those in which you are interested. 
EIMER & AMEND 
Third Avenue, 18th to 19th St. “NEW YORK, N.Y. 
Pittsburgh Office and Showrooms, 2011 Jenkins Arcade 
