154 BUTTER-MAKING. 
can be had for about $8.00 from any creamery supply-house- 
By the use of such a test, the farmer can test his cream and 
Fic. 86.—Peerless hand separator and cross-section of bowl. 
skimmed milk. He can also test the milk of each individual 
cow in the herd, thereby ascertaining which ones are profitable. 
Fie. 87.—Agos hand tester. 
By the use of such a test on the farm, the farmer can test his 
cream daily, and compare results with those from the creamery, 
