66 



BOARD OF AGRICULTURE. 



the obtained results were verified by exact chemical analyses 

 of the butter, buttermilk, and skim-milk obtained in the 

 operation. 



The vessels for the ice method held fifty pounds of milk 

 each, and were filled to a depth of sixteen inches. Time 

 employed for setting, thirty-four hours. The same length of 

 time Avas adhered to in setting after the Holstein method, 

 except from the end of May to the middle of September, 

 when it became necessary to reduce this time twenty-two to 

 thirty hours, — due to the condition of the milk. A Ledfeldt 

 centrifugal running ten hundred and forty revolutions per 

 minute accomplished the work in about thirty-one minutes ; 

 but from Aug. 8 to Sept. 2 the machine ran very unsteady, 

 in fact, so much so, that on Sept. 3 the velocity had to be 

 reduced to nine hundred and fifty revolutions per minute, 

 and the tune of running prolonged to thirty-six minutes and 

 a half. The butter obtained was worked once, then weighed, 

 and after that salted. 



In the buttermilk obtained from a hundred pounds fresh 

 milk there were found of fat, — in that of the centrifugal, 

 .07 ; in that of the ice method, .06 ; and finally, in that of 

 the Ilolstein, .07 pounds. Hence the better results of the 

 centrifugal must be due entirely to the smaller amount of 



