3. The owner of each herd desiring tests must provide a satis- 

 factory Babcock machine, the necessary acid and hot water, and a 

 suitable box or cupboard fitted with a hasp for a padlock, in which the 

 supervisor may keep his samples. 



4. In case of long tests, supervisors will be changed every thirty 

 days, if deemed advisable. 



5. All reports of tests must be brought or sent to the Experiment 

 Station by the supervisors. Such reports, after being verified, en- 

 dorsed and copied, will be forwarded to the proper club. The station, 

 however, reserves the right of using the data, if deemed advisable. 



Duties of the Supervisor 



1. The supervisor shall not be held responsible for the identity of 

 any cow tested, but shall accept the statement of the owner or his 

 representative as to her name and registration number. The super- 

 visor, however, shall state whether the cow answers her registered 

 description, if the same has been furnished him. 



2. The supervisor shall see the cow milked dry at the regular 

 milking prior to beginning the test,* shall verify the fact with his own 

 hands and note the time of the same. The last milking must occur 

 at the same hour, one or more days later according to the length of 

 the test. 



3. The number of cows to which an inspector is limited daily shall 

 be dependent upon the amount of work required and the facilities at 

 hand. He shall not exceed five cows when milked four times daily 

 nor ten when milked two or three times daily, without special per- 

 mission from the station. Where inferior facilities for testing are 

 furnished the number of cows allowed daily may be reduced. The 

 authority for such action rests, however, with the Experiment Station 

 official in charge and not with the supervisor. The supervisor shall 

 allow only one of the cows entered to be milked at a time and shall 

 personally oversee the entire milking. 



4. A cow must be milked out at a single sitting. In no case will 

 it be allowable to go back and strip her a second time. 



5. The supervisor shall verify the weight of the pail before each 

 cow is milked. As soon as a cow is milked the supervisor shall take 

 charge of the pail and its contents and keep it under his control until 

 he shall have weighed the milk and taken the sample for the Babcock 



*In case of Ayrshire and Jersey breeds it is not necessary to see the cow milked dry 

 before beginning test. 



