390 Milk and Its Products 



factories. No person shall sell, supply or bring to be manufactured to 

 any butter or cheese factory any milk from which there has been kept 

 back any part of the milk commonly known as strippings, or any milk 

 that is sour, except pure skim milk to skim-cheese factories. The owner 

 or proprietor or the person having charge of any butter or cheese fac- 

 tory, not buying all the milk used by him, shall not use for his own 

 benefit, or allow any of his employees or any other person to use for 

 his own benefit, any milk, cream, butter or cheese or any other prod- 

 uct thereof, brought to such factory, without the consent of the owners 

 of such milk or the products thereof. Every butter or cheese manufac- 

 turer not buying all the milk he uses, shall keep a correct account of 

 all the milk daily received, of the number of packages of butter and 

 cheese made each day, and the number of packages and aggregate 

 weight of cheese and butter disposed of each day; which account shall 

 be open to inspection to any person who delivers milk to such factory. 

 Whenever manufacturers of butter or cheese purchase milk upon the 

 basis of the amount of fat contained therein and use for ascertaining 

 the amount of such fat what is known as the Babcock test, or when- 

 ever the proceeds of co-operative creameries and cheese factories are 

 allotted on the basis of determinations of milk fat by the Babcock test, 

 the bottles and pipettes used in such test shall before use be examined 

 by the director of the New York agricultural experiment station. If 

 such bottles are found to be properly constructed and graded so as to 

 accurately show the amount of fat contained in milk, each of them shall 

 be legibly and indelibly marked "S. B." No bottle shall be so marked 

 except as herein provided or used in any such test by such manufac- 

 turers, unless so examined and marked. The acid used in making such 

 test by such manufacturers shall be examined from time to time by 

 competent chemists employed by the Commissioner of Agriculture and 

 if found not to be of sufficient strength the use of such acid shall be 

 prohibited. No person or persons receiving or purchasing milk or cream 

 upon the basis of the amount of fat contained therein shall credit any 

 patron or patrons delivering milk or cream thereto with a greater or 

 less percentage or average percentage of fat than is actually contained 

 in the milk or cream so delivered. The Commissioner of Agriculture or 

 persons employed by him for that purpose may at any time assist in 

 making tests of milk received at a butter or cheese factory for the 

 purpose of determining the efficiency of tests usually made at such 

 factory. All persons using other than standard bottles or acid which is 

 not of the required strength to accurately determine the amount of fats 

 in milk or crediting any patron or patrons delivering milk or cream 



