112 TESTIMONY OF HENKY MOKTON. 



Q. For the determination of adulteration of milk by water, to de- 

 termine its specific gravity with the lactometer, do you know of 

 any better method than that employed by the Board of Health as 

 shown on this trial ? A. None. 



Q. Suppose brackish water be added to milk, will that vary its 

 gravity ? A. It will. 



Q. How ? A. Increase it. 



Q. Will all brackish water do that? A. No. 



Q. How is that, Doctor ? A. If the brackish water contains very 

 little salt it will make the milk lighter ; in other words if the brack- 

 ish water is lighter than the milk itself it will make the milk 

 lighter ; if the brackish water is heavier it will make the milk 

 heavier. 



Q. Is there not a great deal of brackish water, which when add- 

 ed to milk will make it heavier and make it stand higher by the 

 lactometer ? A. I think not, unless it was so brackish as to impart 

 a very strong taste to the milk. 



Q. Is there not a great deal of brackish water up the Hudson 

 river where the tide water ends and fresh water begins ; where a 

 great deal of milk sent to New York comes from? A. About 

 Newburgh ? 



Q. Somewhere about there ? A. The river is full of brackish 

 water. 



Q. Is not brackish water there which will not lower the gravity 

 of milk ? A. I cannot say. 



Q. Assuming that brackish water be added to the milk with the 

 effect of making it heavier, will the lactometer tell that adultera- 

 tion ? A. It will not 



Q. Then there is an adulteration by brackish water which the 

 lactometer will not detect? A. Not the lactometer alone. 



Q. The lactometer and all the usual tests ? A. The taste will 

 detect it. 



Q. Will analysis detect that addition ? 



(Objected to as irrelevant ; objection sustained.) 



Q. Will analysis determine the condition of brackish water ? 

 A. It will. 



By Mr. PRENTICE Doctor, when you speak of the hvdrometer 

 used for the purpose of milk as being less accurate, or when you 



