Keport of Dairy Husbandry. xxix 



and satisfy himself that at the close of each milking; the pail con- 

 tains nothino- but the milk drawn from the cow under test. 



Third — Under no circumstances shall more than one cow be 

 milked at the same time. The station representativ^e shall keep the 

 milker in full view during the whole time of milking. Where 

 more than one cow is under test the cows sliall be milked in the 

 same order at each milking. 



Fourth — Immediately after the milk is drawn the station repre- 

 sentative will weigh the same on balances provided by the experi- 

 ment station and enter the exact weight of milk at once on his 

 records. He will then sample the milk as follows : 



Fifth — Immediately after weighing, the milk must be poured 

 from one pail to another, then with a dipper, the milk must be 

 stirred at least three times, from the bottom, taking care to empty 

 the dipper each time. From the last dipperful take half a pint or 

 more for the test sample. This test sample must remain in the 

 possession of the representative or under his lock and key till the 

 test is complete. Testing shall be done immediately after milking 

 except when a milking is made at or near midnight. 



Sixth — Tests are always made in duplicate and the test sample 

 must be preserved until a perfectly satisfactory test of the same has 

 been made. 



Seventh — If any of the milk or the test sample from a milking 

 is accidentally lost or is otherwise imperfect, it must be so reported 

 with a note as to the character of the accident or omission. 



Eighth — At the time the test of each milking is made, a sample 

 comprising as many cubic centimeters as the number of pounds in 

 the milking, is taken for a composite sample of the whole test. 

 Sufficient preservative must be used and the representative must be 

 responsible for such composite sample till it is delivered to the 

 proper officer of the station for a check test. 



Ninth — The station representative is not at liberty to waive or 

 vary these directions in any particular. 



This work has been done largely by advanced and graduate students 

 and as it is done at the expense of the individual owner it makes no 

 burden upon the resources of the Station and at the same time 

 affords a large mass of valuable material for the study of milk secre- 



