TESTIMONY OF EGBERT OGDEN DOEEMUS. 105 



Q. When the butter and caseine are removed what name is 

 applied to what is left ? A. Whey, or technically speaking, serum. 



Q. Can the purity of the milk, as to adulteration by water, 

 be better ascertained from the specific gravity of the whey than from 

 the specific gravity of the milk ? 



(Objected to ; objection sustained ; exception.) 



By the COURT Q. In answer to the question put by the counsel, 

 you said the specific gravity of the milk changed while it was 

 being brought from the cow and after it got here ; does not that 

 process go on successively, must it not be conceded to be a fact that 

 the water of milk is constantly evaporating ? A. If we place in a 

 bottle the milk we obtain from a cow, and cork it up and seal it 

 tightly, the specific gravity will vary, if after some hours we make 

 that test as compared with that specific gravity as first indicated. 



Q. Do you mean the aggregate specific gravity of the matter in 

 the bottle or do you mean the specific gravity of certain component 

 parts of the liquid in the bottle ? A. If the lactometer is put in the 

 milk at a certain temperature of 60, just as it has been cooled 

 after coming from the cow, then the milk is allowed to stand per- 

 fectly quiet or moderate agitation, if you please, and in a number of 

 hours it is again tested by the lactometer, it having been closed in 

 such a manner that no water could evaporate, the specific gravity 

 will alter. 



Q. Do you mean lessen or increase ? A. It will increase at one 

 time and lessen in another ; that is not my own authority, your 

 Honor, but I will quote the various books that refer to that ; it is a 

 mystery that we do not comprehend ; it is due to some peculiarity. 



Q. Does that alter its specific gravity ? A. It does change its 

 action with the lactometer. 



By Mr. LAWEENCE Q. Now, Mr. Prentice, the cooking opera- 

 tion is completed. WITNESS Your Honor, here is the milk that is 

 mingled with sand ; the one with the sand dries a little sooner than 

 the other, as a rule, depending of course, upon the quantity ; now, 

 to see that it is thoroughly dry, we heat it a second time, and weigh 

 it a third ; as to the exact number of minutes depends upon the tem- 

 perature, the current of air, the moisture, the atmosphere, etc. ; this 

 is the milk without the sand ; no one can testify that that is perfectly 

 dry, unless he uses the balance ; it must be weighed and then heated 



