TESTIMONY OF HEKMAN ENDEMANN. 141 



specific gravity of liquids than by the use of such an instrument ? 

 A. No, sir, not for any practical purposes. 



Q. Is the standard of 1.029 a correct standard for pure, sound 

 milk ? A. Yes, sir ; I consider it a good one a very good one. 



Q. You are familiar with the literature on this subject, are you ? 

 A. I paid a little attention to it not much. 



Q. If a sample of milk offered for sale in this city at a tempera- 

 ture of 60 Fahr., tested by the lactometer standard of the Board of 

 Health at 1.029 should rate at 90 on the lactometer, what would that 

 determine in your opinion? 



(Objected to ; question withdrawn.) 



Q. I will ask, in your opinion, is the lactometer as accurate a 

 method as any for testing the adulteration by water of milk offered 

 for sale in this city, when used with the thermometer at a degree of 

 60 Fahr., and with the observation and the use of the senses of the 

 inspector ? 



(Objected to, on the ground that it calls for the expression of an 

 opinion on the part of the witness as to the qualifications of the 

 inspector, and as to his sense of smell, etc. ; objection overruled.) 



A. As far as the senses are concerned, I cannot say what the 

 inspector is able to do, but as far as the lactometer is concerned, if 

 the lactometer is down at 90 at a temperature of 60 Fahr., it is evi- 

 dent that the milk has been watered, provided it is not the milk of 

 an individual cow, but commercial milk. 



Cross-examined : 



Q. Have you made an analysis of milk ? A. Yes, sir. 



Q. How many ? A. Between two and three hundred. 



Q. How long ago ? A. About four or five years ago. 



Q. Have you made any since ? A. Yes, sir ; occasionally. 



Q. When did you make the last ? A. I could not say. 



Q. Have you made tests, with the lactometer, of milk ? A. Yes, 

 sir. 



Q. Have you verified the lactometers which you used on these 

 occasions ? A. In every case I always made an analysis. 



Q. In every test you made by the lactometer, I understand you 

 to say, you verified by analysis ? A. Yes, sir. 



