IO4 SCIENCE AND PRACTICE OF CHEESE-MAKING 



sufficient insulation for the curing-room. For the ic_- 

 house an extra thickness of lumber and damp-proof 

 paper is advised in both ceiling and wall construction. 

 The ice-house floor and walls halfway up are lined 

 with galvanized iron. 



The construction of the floor in the ice-house is 

 important, as provision must be made for protecting 

 the ice from the warm temperatures of the soil under- 

 neath. A cement floor with gravel and stone support 

 is first constructed. Over this, 2-inch by 4-inch sup- 

 ports are placed on edge at intervals of 18 inches. 

 Between these the space is filled with coal cinders 

 or shavings. Over this a 2-inch plank floor is laid, 

 and this covered with galvanized iron. A drain 2 

 inches by 2 inches should .be made in the ice-house 

 floor close to the curing-room wall, toward which 

 the ice-house floor should incline. The drain is neces- 

 sary to carry off the water from the melting ice. A 

 close-fitting S-shaped pipe with water-trap should 

 connect the drain with outside disposal. Over the 

 galvanized floor is placed a rack made of 2-inch by 

 4-inch supports on edge. This prevents the ice from 

 lying in water when it starts to melt. During the 

 winter months, the ice-house is packed full of ice. 

 No sawdust is used, the insulation being sufficient to 

 protect it 



As Figure 21 shows, small trap-slides are placed 

 near the ceiling and floor between ice-house and cur- 

 ing-room. As soon as these are opened, the warm air 

 in the curing-room enters the openings at the top, 

 passes over the ice and out through the lower openings, 

 thus creating a circulation of cold air through the 

 curing-room. A uniform temperature of from 52 



