CHAPTER X. 

 COMPOSITE SAHPLES OF MILK. 



175. Shortly after milk testing had been introduced to 

 some extent in creameries and cheese factories, it was 



suggested by Patrick, 

 then of the Iowa ex- 

 periment station, l that 

 a great saving in labor 

 without affecting the 

 accuracy of the results 

 could be obtained by 

 mixing the daily sam- 

 ples of milk from one 

 source, and testing this 

 mixture instead of 

 each sample contribu- 

 ting thereto. Such a 

 mixture is called a 

 composite sample. The 

 usual methods of tak- 

 ing such samples at 



FIG. 50. Taking test samples at in-take. creameries and cheese 



factories during the past few years have been as follows: 



176. Methods of taking composite samples, a. Use of 

 tin dipper. Either pint or quart Mason fruit jars, or milk 

 bottles provided with a cover, are used for receiving the 

 daily samples. One of these jars is supplied for each 



Bulletin No. 9, May 1890. 



