The Babcock Test. 



73 



As the bottles are .calibrated for only 5 cc. of milk and the neck 

 of the bottles, with scale, is correspondingly fine, testing milk 

 with this machine requires some nicety of manipulation not called 

 for in case of regular Babcock testers constructed for the use 

 of factory operators and dairymen. 



FIG. 30. 



Test bottle and 

 pipette for phy- 

 sician's centri 

 fuge. 



FIG. 29. Physician's centri- 

 fuge that may be used for milk 

 testing. 



840. Whitman milk bottle. Dr. Koss C. Whitman has de 

 vised a milk testing bottle for the special use of physicians in 

 testing human milk and small amounts of cow's milk by the Bab- 

 cock test. 1 The bottle, which can be placed in an ordinary urine 

 centrifuge, consists of two parts, a small tube for holding the 

 milk, acid and water, and a detachable graduated fine tube, into 

 which the fat column is brought after the final filling and whirl 

 ing. 5cc. of milk are used in this test. 



iJour. Amer. Med. Asso., 47 (1906), p. 204. See also Doran, Jr. 

 Ind. and Eng. Chemistry, 1912, p. 841. 



