DAIRYING 107 



THE WEIGHT OF ICE. 



857. A cube of ice one foot square, weighs about 58 pounds 

 when the ice is solid. There will be some variation from 

 this in actual practice, depending on the amount of snow and 

 shale in the ice. An approximation of the amount of ice needed 

 by the user of the plant may be calculated by determining for 

 how many days a given amount of ice will be used during the 

 year. If a space five feet square and five feet deep is packed 

 solid with ice, this is 5x5x5, or 125 cubic feet, which multiplied 

 by 58 Ibs., gives 7250 Ibs. This will supply about fifty pounds of 

 ice per day for 125 days, when a loss is allowed of about eight 

 pounds per cubic foot from waste. Similar calculations may be 

 made for supplying different amounts of ice per day for any 

 number of days. 



The ice house in the plan submitted with this article will hold 

 about 10x14x9, equal to 1260 cubic feet, which multiplied by 58, 

 gives 73,080 pounds, which is about 36 tons of ice. 



CITY MILK ORDINANCES. 



858. In former years very little attention was given to the 

 regulation of anything, but the skimming and the watering of 

 milk. The developments in bacteriology have shown, however, 

 that milk may be the means of spreading many contagious 

 diseases, and on this account it has become necessary to protect 

 the health of the people by means of city ordinances which are 

 designed to make it impossible to sell any unsanitary or diseased 

 milk or cream within the city limits. Such ordinances are 

 usually made to cover the following points at least : 



A license for which $1.00 is paid each year must be obtained 

 by everyone selling milk or cream in the city. 



The location of the dairy or dairies, and the number of cows 

 supplying the milk, as well as permission to inspect the barn and 

 premises where the milk is produced must be submitted. 



Each delivery wagon must have its license number marked 

 on it. 



