CITY MILK AND ICE CREAM PLANTS — 325 
In the foregoing illustration the arrangement does not 
provide for holding cream in the refrigerator after pas- 
teurization. Cream, however, could be held over a day 
in the mixing vat by providing the latter with the neces- 
sary cooling coils. 
What has been said in regard to the economy of using 
gas power in milk plants applies with equal force to ice 
cream plants. 
Sanitary Features. Matters of prime importance 
in the construction of milk and ice cream plants include 
an abundance of light and the use of material which can 
easily be kept clean. There is no better disinfectant than 
sunlight, and too many windows cannot be inserted in 
buildings used for handling milk and cream. To secure 
the maximum amount of sunlight some of the best milk 
plants use dormer windows or skylight. 
To be sanitary, the floors, walls and ceiling should 
be constructed of concrete; in fact the entire building 
should be built of brick or concrete. Where it is desired 
to combine “showiness” with sanitary efficiency, more 
expensive material such as tile may be used for inside 
finish. 
Reinforced Floors. ‘To increase the wearing quality 
of concrete floors, perforated steel plates should be em- 
bedded in the surface of the concrete floor immediately 
after the cement finish has been applied. 
