CHAPTER X. 



COMPOSITE SAMPLES OF MILK. 



179. Shortly after milk testing had been introduced 

 to some extent in creameries and cheese factories, it was 

 suggested by Patrick, then of the Iowa experiment sta- 

 tion, 1 that a great saving in labor, without affecting 



the accuracy of the 

 results, could be ob- 

 tained by testing a 

 mixture of the daily 

 samples of milk from 

 one source, instead of 

 each one of these 

 samples. Such a mix- 

 ture is called a com- 

 posite sample. The 

 usual methods of tak- 

 ing such samples at 

 creameries and cheese 

 factories are as fol- 

 lows: 



180. Methods of 

 taking composite 



FIG. 51. Taking test samples at in-take. samples. a. Use of 



tin dipper. Either pint or quart fruit jars, or milk bot- 

 tles provided with a cover, are used for receiving the 

 daily samples. One of these jars is supplied for each 



l Bulletin 9. May 1890. 



