CEXTBAL SCIENTIFIC CO., CHICAGO, U. S. A. 



325 



No. 



No. 7964. 



7964. INCUBATOEa Low Temperature, Thelco, Electrically Controlled, with walls composed of ten 

 distinct layers of wood, porcelain, impervious sheeting, dead air spaces and wool felt. The 

 outside covering is of porcelain, fused on steel, with aluminum trimmings around the doors, 

 edges and corner. The Incubator contains two chambers, an upper for ice and a lower for 

 the water-jacketed working compartment, each with its own outside door. The ice chamber 

 is one-piece porcelain lined, and is equipped with a heavy galvanized ice rack. The capacity of 

 this chamber is about 75 pounds of ice, which will last several days in a warm laboratory. 'The 

 electric heating element, or plate, covers the bottom of the lower chamber and is renio'vable. 

 This heating element is made of asbestos transite, wound with a special resistance wire and 

 can be depended upon to run indefinitely without attention. The working compartment is placed 

 within the lower chamber directly on the heating element. It is a heavy triple-walled cop- 

 per jacket, the space between the walls filled with water, and the arrangement is such that 

 while in use the water is in constant circulation. A constant water level attachment is 

 placed on the outside of the incubator so that water in the walls of the copper jacket is 

 automatically kept at a constant leveL 



The bimetallic thermostat is located in the top of the working compartment and is regulated by- 

 means of a milled head screw from the outside. A pilot lamp indicates when contact is 

 made and broken. The thermostat can be qnicklv and easily set to give any desired tem- 

 perature between 10"C. and 40'C. 



The working compartment is provided with a cushioned glass door to allow inspection of the 

 contents of the chamber without exposure to the warm outer air. Complete with two adjust- 

 able shelves, adjustable ventilator, snap switch, and connecting cord and plug 



^ T '"A B 



For volte JJQ 220 



Eacn $330.00 330.00 



7974. INCUBATOR. Opsonic, for maintaining pipettes of blood serum at a temperature of 37*C. 

 Constructed of heavy polished copper with tabulations for thermometer, gas regulator and 

 for filling the bath, and with receptacles for 20 pipettes, numbered in order. A cup 3*6 by 1 

 inch is provided for holding instruments. Mounted on a sheet iron base, 8 inches high, with 

 opening for Bunsen burner. Type A is provided also with six holes, % inch in diameter in 

 the top to hold test tubes. Without burner or regulator 



No 



Height, inches 



Width, inches 



Depth, inches 



Each .".".".".".".".'.'.".'.".".".".' 



INDUCTION COILS, see Electrical Apparatus. 

 INK. DIAMOND, see Diamond Ink. 

 INK. Drawing. ee Drawing Ink. 



A 

 .U 



- 



6 

 HA 



B 

 14 



- 



4 



BUI 



