TESTIMONY OF HENRY A. MOTT, JR. 139 



Q. Was he your assistant ? A. No, sir. 



Q. You did not allow me to finish my reading, shall I proceed ? 

 " I therefore do not hesitate to say that any milk which tests below 

 a hundred on the instrument adopted by the Board of Health has 

 been tampered with ? " A. That is correct. 



Q. What do you regard as the best test for milk ? A. I regard 

 the best test for the purity of milk chemical analysis. 



Q. Is that better than the use of the lactometer ? A. For the 

 purity it has never been claimed that the lactometer would decide ; 

 the lactometer will detect the adulteration of milk by water and 

 that is all that is claimed by the lactometer. 



Q. Now, Dr. Mott, will the lactometer show the quantity of 

 added water which milk that has been adulterated by water con- 

 tains ? A. It will show that the milk has added to it water. 



Q. Will it show how much water has been added ? A. It will 

 show how much water has been added more accurately than by any 

 other process ; for this reason, we have amongst scientific men a, 

 standard for the specific gravity of milk, but we have not the per- 

 centage of water contained in milk. 



Q. Cannot you tell more definitely by analysis how much 

 water, added and natural, a sample of milk contains than you can by 

 the lactometer? A. No, sir; added and contained did you say? 



Q. Added and natural ? A. Well the lactometer does not pre- 

 tend to tell the amount of water normal to healthy milk. 



Q. Will you give simply an affirmative or negative answer ? A. 

 Chemical analysis will give the amount of water in milk. 



Q Will chemical analysis show how much water has been 

 added to milk adulterated by water ? A. No, sir ; because we have 

 no standard for the percentage of water in milk. 



Q. Has not a paper of Professor Chandler's giving a standard 

 been published in several papers? A. lam not familiar with the 

 fact that according to my researches that that standard has been 

 accepted. 



Q. Why don't you answer that, Professor Chandler has pub- 

 lished such a standard ? A. I might publish such a standard my- 

 self ; I have seen such a standard published by Professor Chand- 

 ler. 



Q. Now, don't you think that analysis ought to be added to the 



