Babcock Test 93 
somewhat from that used by Dr. Babcock; less 
whirling is required, and the same reagents are 
used as in the case of the Beimling. The DeLaval 
Fig. 12. Hand centrifugal for Babcock test. 
Separator Company has also introduced an appara- 
tus for testing milk which is known as the butyrom- 
eter. In this test a single reagent, sulphuric acid, 
is used to set free the fat. The form of the ap- 
