532 MISSOURI AGRICULTURE REPORT. 



will have black specks if the acid is too strong. In either case, the test 

 is inaccurate and you should make another test using more or less acid 

 as the case demands. 



There is sometimes an inaccuracy in the glass ware and this causes 

 an inaccuracy in the test. Sometimes the glass is not properly graduated. 

 It is well to have your experiment man test the glassware before using 

 it in testing. Make use of these experiment station fellows in your 

 agricultural colleges and experiment stations. No honest creamery man 

 will complain of being sure that his glassware is accurate, he wants to 

 know if his scales are right. There is one thing the farmers ought to 

 do in regard to this test, they ought to learn all about it. It would not 

 take a day's time to find out as much about it as anyone else knows. You 

 can go into the laboratory and see whether it is made correctly or in- 

 correctly. 



Mr. Bernays — Our city law requires that when milk falls below tlie 

 standard and we go into court on the case, that we have it tested by the 

 Gravimetric test. This test is time-consuming and expensive, and con- 

 sequently to handle the large number of samples that our inspectors bring 

 in, we make a preliminary test by the Babcock method and whenever this 

 is below the standard, we have to repeat it by the Adams Coil Gravimetric 

 process and we find that the results of the two methods always agree with- 

 in less than one-tenth of one per cent and that really the Babcock test 

 is the more accurate when properly conducted, because either extracts 

 from the dried milk something more than the fat, that is, the substances 

 which are called extractives. In the cow's milk, these extractives, not 

 fat, are largely composed of Cholesterine. 



TIME BETWEEN MILKINGS. 



How much advantage is there in quantity in milking a cow three 

 times a day over twice a day 



Mr. Graves — We found that there is not so much difference in 

 quantity as there was in quality. You can account for that in this way — 

 and don't anyone hesitate to call me down if he wants to — cows yielding 

 the amount of milk that these cows yield have large udders. Sometimes 

 they are distended to the greatest extremity and they become painful. 

 We found we relieved the cows, made them more comfortable and got 

 better results by milking three times a day. Then too, the milk thi't 

 oozes out of a full udder is the milk that contains the most buttcrfat. 

 We were pretty well satisfied that we got a little more butterfat by work- 

 ing right hard three times a day to get it. 



Mr. Patterson — I can emphasize that by saying the longer a cow 



