ADAMS METHOD. 



21 



the fat. The charged paper is placed in the 

 water-oven on a glass plate, milk end up- 

 wards, and dried. In about an hour it is 

 usually in a suitable condition for the ex- 

 traction of the fat. It is inserted in a Soxh- 

 let continuous extraction apparatus, the 

 tared flask of which should have a capacity 

 of about 150 c.c. and contain about 75 c.c. 

 of ether. Heat is applied to the flask by 

 means of a water bath, or by resting it on 

 a piece of asbestos paper, which is heated 

 by a small flame. After the coil has re- 

 ceived ten or twelve washings, the flask is 

 detached, the ether removed by distillation 

 and the fat dried by heating in an air oven, 

 at about 22OF , and occasionally blowing 

 air through the flask. After cooling, the- 

 flask is wiped with a piece of silk, allowed 



to stand ten minutes and weighed. 



A convenient method of spreading the milk over 

 the paper and arranging the coil is described by Allen. 

 The strip is rolled up, together with a piece of thin 



