COOLING AND AERATION 



211 



because of the rather high price of commercial refrig- 

 erators. 



The construction of this box, shown in Fig. 60, con- 



j|"T.&.G. BOARDS 

 ~ STRIPS 



RAPER 

 .GALV.JRON < 



Fig. 60. Cross-Section of Cheap Ice Box. 



sists essentially of two boxes separated by one-inch strips 

 placed at intervals of about one foot. Double thickness 

 of building paper is placed on both sides of the strips 



