50 TESTIMONY OF CHAKLES F. CHANDLER. 



the habit of reading ; one selects the highest part of the curve, 

 another the lowest, according to habit ; in testing milk we select the 

 highest and follow that invariably, in reading as far as we can see 

 the scale, and not attempting to estimate where a line drawn level 

 across the entire surface of the fluid would strike the scale below 

 the visible portion ; in all my reading I have read that portion of 

 the scale which was visible to the eye ; the milk rises on the surface 

 of the lactometer ; I call this one 45. 



Q. Try another ? A. I call that 46 ; possibly more than 46, 

 rather than a little less ; Prof. Barker says 46. 



By COUNSEL FOB DEFENDANT Q. Now, Doctor, can you now tell 

 whether there is any material variance between this lactometer and 

 the one you have used ? A. I have not kept those figures in my 

 head ; there is a margin of two or three degrees in the five instru- 

 ments tested. 



Q. Could you test this to-night ? A. I have other engagements ; 

 I don't care to spend the evening in testing another man's lactome- 

 ter ; I have a consultation this evening in connection with another 

 law suit, and it would be impossible for me to devote the evening to 

 that investigation ; if Dr. Waller is willing to test it 



Q. I produce the same bottle previously exhibited to Dr. White 

 containing the same contents, and ask you to apply the test of the 

 lactometer to that, at a temperature of 60 Fahr., and give the read- 

 ing ? 



(Objected to ; objection sustained ; exception.) 



Q. Now, Doctor, how do you test the gravity of the salt solution 

 in which you test your lactometers ? A. By means of a balance. 



Q. You provide your officers with thermometers, do you not ? A. 

 I do. 



Q. Have you always done that ? A. Originally, in the early 

 stage of this business, the thermometer was sometimes used and 

 sometimes not ; when it was used it was simply for a very careful 

 determination of the specific gravity ; when it was not used it was 

 because it is possible in testing the milk by means of the lactometer 

 and tasting it to determine whether it approximates to 60 Fahr., 

 and therefore it was not considered necessary to determine with 

 absolute certainty. 



Q. I simply want an answer to that specific now ; when was it 



