120 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



ing to the sum of the individual testing made by the University 

 tester; column six is the result of similar work done by the S. 

 C. buttermaking class. The remaining columns indicate the 

 overrun for each respective condition, the last column being the 

 overrun it would be possible to obtain with butter of the various 

 per cents of fat, provided there was a 1^ per cent mechanical 

 loss. This would be slightly too small a loss for some condi- 

 tions, but represents the loss obtained in our own creamery. 



Discussion of Chart I. 



Discussion of Chart II. 



Facts presented in the above form mean little in themselves 

 only as they are indicative of what is happening in our own and 

 in other states, every day a plant is in operation. Conclusions 

 or lessons we might draw from such data are that it is possible 

 to account for all butter fat that is delivered to a creamery, 

 whether in the form of cream or whole milk; that owing to our 

 imperfect methods which we are obliged to employ in the practi- 

 cal field, there is bound to be some lack of uniformity in any set 

 of figures based on practical work; that every day discrepancies 

 do occur, which are clearly the result of carelessness on the part 

 of the operator; that the adoption of some such system is not 

 only of value to the inspector but to the operator, since by its 

 use he becomes his own inspector; that it is out of the question 

 for an operator, acting upon the advice of those who are sup- 

 posed to know, to change from a low to a high overrun without 

 reducing his mechanical loss, modifying his system of testing 

 or changing the composition of his butter ; that since it is mathe- 

 matically impossible to combine high fat content with high over- 

 run, the Babcock test for butter fat in butter becomes a guide 

 and a check to the creameryman, the farmer and the inspector 

 as to the highest possible overrun, as well as to the amount of but- 

 ter fat recovered in any day's run. 



