90 TESTIMONY OP GEOEGE C. CALDWELL. 



Q. How many hundreds of samples of milk have you analyzed ? 

 A. I have not analyzed any hundred, I have analyzed about a dozen 

 samples, I do not remember how many. 



Q. How recently ? A, Some of them have been made within the 

 last two years ; the last was made last spring, made partly by my- 

 self and partly by an assistant under my direction. 



Q. Over how many years does the making of this dozen of analy- 

 ses of milk extend ? A. It extends perhaps over two years, 



Q. Then although you have studied chemistry for twenty years, 

 Professor, you have only taken up the subject of milk within the 

 past two ? A. The subject of the analysis of milk I have not taken up 

 except in the last two years ; analysis by myself I mean. 



Q. In all your experience in making all these analyses of milk 

 what is the average quantity of butter that you find them to con- 

 tain ? A. I have not my figures with me and therefore I cannot tell. 



Q. Can you estimate it? A. I should say the proportion of but- 

 ter was about three and a half per cent., but I cannot tell any nearer 

 than that, I have made no special effort to remember the results. 



Q. Have you ever made tests with the lactometer ? A. I have. 



Q. "When ? A. I made some tests shortly before coming here. 



Q. To-day do you mean? A. Shortly before coming to the city, 

 within about four or five days ago. 



Q. With reference to this trial ? A. I made some comparative 

 tests with this lactometer. 



Q. "With reference to this trial ? A. I did. 



Q. Then I do understand that you have especially qualified 

 yourself to testify on this trial ? 



(Objected to.) 



Q. Where did you make these tests with the lactometer ? A. In 

 my laboratory in Ithaca, Cornell University. 



Q. What lactometer did you use ? A. I used the lactometer 

 furnished me by the Board of Health. 



Q. Did you try that lactometer to test its accuracy ? A. I did 

 not. 



Q. Then you do not know it to be accurate, do you ? A. I do 

 not, except that it was furnished me by the Board of Health. 



Q. How did it come to you ? A. It was given to me last winter 

 by the President of the Board of Health. 



