92 DAIRYING 



machine-made bottles now on the market are very exact and 

 uniform in shape and in capacity. 



834. The capacity of bottles may be tested by measuring the 

 required amount of water in them when a new lot is received. 

 One quart is equal to 946 c.c. and by using a graduated cylinder 

 the capacity of each bottle may be tested by pouring each bottle 

 filled with water into this cylinder and noting the number of c.c. 

 it contains. 



835. Paper milk bottles are now on the market, but have 

 not come into general use. They cost about %c per quart, and 

 %c per pint, and although paraffined and sterile, their expense is 

 more than the cost of glass bottles, together with the cost of 

 cleaning, transportation, etc. 



836. The life of a glass bottle varies in different establish- 

 ments. The loss from breakage and failure to return them 

 amounts to about one per cent per day. This, however, will de- 

 pend on the carefulness of the delivery men and washers. A 

 record kept in an establishment where 500 bottles were used 

 daily showed a loss of 3 bottles per day from breakage. 



837. The cost of bottling and delivery of milk has been 

 estimated as about equal to the cost of production. A large milk 

 dealer near Duluth estimates the cost of producing the milk as 



'5c per quart, and the cost of distribution as 5c per quart. 



Wiiislow estimates the cost of bottling and retailing milk in 

 the city as follows : 



Freight and cartage 1% cents 



Bottling and icing 1% cents 



Wagon delivery 1 cent 



Office expenses % cent 



Total cost of handling, per quart . . 4 1 / 4 cents 



