44 EQUIPMENT 
during which the ice must be used. An excess 
of 25 to 50 per cent must be added to allow for 
loss through melting. 
Spring-water and Milk-house 
Spring water should be protected from con- 
tamination. Cold running water is next best to 
ice-water for cooling. A well constructed milk- 
house, properly screened, is the safest place to 
keep milk. 
