TESTIMONY OF CHARLES A. DOBEMUS. 231 



one time will weigh more or less than the same quart at another 

 time ; if I took exactly a quart of milk and let it stand it would not 

 fill the quart measure. 



By Mr. WAEHNER Q. Suppose you took a cubic inch, would that 

 weigh the same ? A. If I took a cubic inch on Monday and a cubic 

 inch of the same milk that had been sealed up on Tuesday, the 

 cubic inch of Tuesday would weigh less than the cubic inch, of 

 Monday. 



Cross-examined by Mr. PRENTICE : 



Q. Under certain circumstances does milk ferment, and does it 

 change to koumiss or some other substance ? A.. Milk undoubtedly 

 goes through fermentation, but I am not speaking of fermented milk 

 when I speak of milk kept 



Q. Answer my question ? A. Undoubtedly it does, it gets 

 sour. 



Q. Now, sir, is it a fermentation in which the sugar of the milk 

 changes to alcohol ? A. The sugar of the milk may possibly change 

 into alcohol. 



Q. Is alcohol lighter than water ? A. Oh, undoubtedly. 



Q. Now, sir, will this change take place in one day ? A. I do 

 not know, sir, I have never tested any of these light samples of 

 milk, milk which has grown lighter whether it was by alcohol or 

 some other substance. 



Q. You have made a quotation from Watts' Dictionary ? A. I 

 have. 



Q. In that same article, on page 208, will you tell me if this is a 

 correct sentence : " The smaller intervals onathe hydrometer scale 

 may always be subdivided into equal parts by estimation or other- 

 wise without appreciable error ? " Is that so there ? A. It is so 

 written and printed in the book. 



Q. Is it not a fact that the largest difference between the degrees 

 of the lactometer is one 550th part of an inch ? A. I never meas- 

 ured it. 



Q. Do you know ? A. I have never had the Board of Health 

 lactometer in my hand. 



Q. How do you know anything about the proper sizes of the de- 



