New York Agricultural Experiment Station. 



135 



from the refrigerator. The total length of pipe is 11 ft., and it 

 passes four times across one side of the chamber. Fig. 6 is 

 a diagrammatic sketch of the wall of the chamber which bears this 

 cooler. At A is a screw union securing the cooler to the pipe which 

 enters from the refrigerator. At B is a slip-joint where the cooling 

 pipe rests in the drain. C is a stand pipe of one-and-a-quarter- 



Fig. 6.' — Wall of 18° Chamber, Showing Cooler. 



A, screw union at entrance from refrigerator; B, slip-joint at exit into drain; C, 



stand-pipe. 



inch brass tubing. Within the stand-pipe is a glass tube passing 

 through a rubber stopper which fits tightly into the outlet at B, 

 thus forcing the water to run out through the tube. By changing 

 the length of this glass tube the amount of cold water retained 

 within the cooler is easily regulated. As the cooler is attached only 

 at the screw union A and the slip joint B, it is readily removed for 

 cleaning. 



