TESTIMONY OF JOSEPH T. O'CONNOR. 151 



and different dairies at different times and when ? A. I examined 

 in June and July, 114 cows, duplicating the observations on some of 

 them, so that in that time, if my impression serves me rightly, I 

 made 133 observations ; in the month of September following, I 

 examined also 31 cows, and in addition these other cows which I 

 have spoken of. 



Q. You mean the milk of the cows ? A. Yes, sir. 



By the COURT Q. When? A. This present year. 



Q. This last year ? A. Yes, sir. 



By Mr. PRENTICE Q. How were your examinations made ? A. 

 They were made with the lactometer furnished me by the Board 

 of Health, and the thermometer also furnished me by the Board of 

 Health. 



Q. Did you know the lactometer to have been adjusted ? 

 A. Yes, sir. 



Q. At what standard ? A. It was adjusted to the standard of 

 1.029 of specific gravity, equalling the 100 mark on the lactometer. 



Q. At what temperature was the milk? A. I examined the 

 milk in all cases at a temperature of 60 degrees, with the exception 

 of the last place which I have stated ; this statement of 31 cows 

 where the milk, in consequence of the difficulty of not being able to 

 get water sufficiently cold to cool it down rapidly to 60 was taken 

 at about 62. 



Q. What scale, what degree did it reach in these thirty-one cows ? 

 A. In these thirty-one cows it was all above 100 excepting these two 

 cases. 



Q. How were the other cases ? A. The previous cases amount- 

 ing to 133 out of the whole number I had three cases below 100 on 

 this lactometer. 



Q. What month was that ? A. Those three cows were all in July. 



Q. What time in July ? A. The first specimen was taken, I 

 think, upon July, the 1st or 2d, I have forgotten ; I could refer to 

 the book, if necessary. 



Q. What was the weather, and the pasture then ? A. The 

 weather was intensely hot, and pasture was dried up or nearly so. 

 The other two cases were taken about, if my memory serves me 

 right, ten days later. The heat had been increasing I may say, and 

 the pasture was of course in a much worse condition. 



