TESTIMONY OF HENEY MORTON. 107 



Q. You concede, do you not, that as a test of the purity of milk 

 the hydrometer is not as strictly accurate as it is when used as a 

 test of other fluids to which it is ordinarily applied ? A. As a 

 test of some of the ordinary fluids to which it is applied; it would 

 not be so in reference to mixtures of petroleum distillate, naphthas, 

 and the like, where the mixture of bodies of different densities 

 takes place. 



Q. Professor Morton, if two samples of milk which when pure, 

 each of which stood at 100 by the lactometer properly used, were 

 presented to you, one sample having been adulterated by the 

 addition of water, and the other having been adulterated by the 

 addition of cream, each adulteration being to such an extent as to 

 bring the fluid down to 90 on the lactometer, and you applied to- 

 those two fluids the test by the lactometer, the thermometer and 

 the exercise of the senses, could you tell which milk had received 

 the water and which the cream ? A. I think I could. 



Q. Are you positive about it ? A. I cannot be positive about a, 

 future event. 



Q. Have you ever tried such a thing ? A. I have not, 



Q. What experiments have you made in the analysis of milk ? 

 A. I have examined various specimens of milk with the lactometer 

 and hydrometer. 



Q. How many ? A. About a dozen. 



Q. Within how long ? A. Some of them last week. 



Q. How many ? A. Some 7 or 8. 



Q. With reference to this trial ? A. N'o, with no special refer- 

 ence to this. 



Q. You knew at that time that you were to be a witness on this 

 trial, did you not. A. I did. 



Q. Prior to last week, how many analyses of milk have you made ? 

 A. In using the term analyses, which has a good many meanings, I 

 must explain that I have examined milk, but have not made strictly 

 an analysis, that is, I have not separated it. 



Q. I am not using the word analysis in what I understand to be 

 its chemical meaning ; I am now using it in its separation of 

 constituents ? A. I have not made an analysis of milk in that sense, 

 I have analyzed many other substances. 



Q. Can you swear that analysis is not a surer test for milk than 



