194 PHARMACEUTICAL BACTERIOLOGY 



The following extracts from the California State Pure Milk Act ex- 

 plains the essentials regarding pure milk. 



1. Tuberculin Test. — It shall be unlawful for any person, firm or cor- 

 poration, except in bulk to the wholesale trade, to sell or exchange or 

 offer or expose for sale or exchange for human consumption any milk from 

 cows that have not passed the tuberculin test, until it has been pasteurized 

 by the holding process at a temperature not less than one hundred forty 

 degrees Fahrenheit for twenty-five minutes; provided, that milk for 

 drinking purposes shall not be heated above one hundred forty-five 

 degrees Fahrenheit. It shall further be unlawful for any person, firm or 

 corporation to sell or exchange or offer or expose for sale or exchange any 

 milk products except cheese, into the composition of which any milk 

 enters other than that permitted in this section of this act, to be sold at 

 retail. For the purpose of this act milk shall be construed to include 

 cream. 



2. Uninspected Milk. — It shall be unlawful for any person, firm or 

 corporation to sell or exchange, or offer for sale or exchange, in any city, 

 country or city and county, in which a milk inspection service, approved 

 by the state diary bureau, has been established, any milk otherwise than 

 as hereinafter provided in this act, and for the purpose of this act, the term 

 "inspecting department" shall be construed to mean the health depart- 

 ment of a county or group of counties, city or group of cities, or city and 

 county, maintaining a milk inspection service approved by the state 

 dairy bureau. 



3. Impure Milk. — All milk, except certified milk, guaranteed milk, 

 grade A milk, and grade B milk, is hereby declared to be impure and 

 unwholesome and must not be sold for human consumption. 



4. Grades. — For the purpose of this act, milk shall be graded as 

 follows: certified milk, guaranteed milk, grade A milk, grade B milk 

 and milk not suitable for human consumption; provided, that milk 

 not suitable for human consumption shall be plainly so marked. 



5. Guaranteed Milk.— No person, firm or corporation shall sell or 

 exchange, or offer or expose for sale or exchange, as or for guaranteed milk, 

 any milk, raw or pasteurized the quality of which is guaranteed by the 

 dealer, without approval in writing of the inspecting department, which 

 milk must be of a higher standard than that required for grade A raw milk. 



6. Grade "A" Milk. — No person, firm or corporation shall sell or 

 exchange, or offer or expose for sale or exchange, as and for grade A milk, 

 any milk that does not conform to the rules and regulations and the 

 methods and standards for production and distribution of grade A milk 

 adopted by the inspecting department. 



Grade A milk shall conform to the following requirements as a mini- 



