TESTIMONY OF GEORGE C. CALDWELL. 91 



Q. Did you use the thermometer ? A. I did. 



Q. At what degree of Fahrenheit ? A. The temperature was very 

 low ; I used a Centigrade thermometer, and I did not at the time 

 convert it into Fahrenheit 7 degrees Centigrade. 



Q. Did you notice any variations of the thermometer in the 

 milk you tested ? A. There were no variations during the time of the 

 experiment. 



Q. Had you tested milk with lactometers before or after that ? 

 A. I had not. 



Q. Did you ever note any variations of temperature in milk 

 when tested by lactometers ? A. As that is the only time I have 

 tested, I noticed no variations then ; I have noticed no varia- 

 tions. 



Q. In all, how many tests did you make with the lactometer ? 

 A. I made one test which included the addition of five successive 

 portions of water. 



Q. Did you note the result of your investigations ? A. I did. 



Q. What was it? A. The milk stood at 110. 



Q. That was at a temperature of 7 degrees Centigrade ; what 

 would that have been Fahrenheit ; at what lactometrical degree 

 would that milk have stood at 60 Fahrenheit ? A. I do not 

 remember. 



Q. That is not a question touching your memory ? A. I do not 

 understand your question ; it would not have stood at 60 degrees 

 Fahrenheit. 



Q. If that same milk had been at 60 Fahrenheit, at what degree 

 would it have stood on the lactometer ? A. That I cannot tell. 



Q. Cannot you convert Centigrade degrees into Fahrenheit ? A. 

 I do not remember ; I cannot tell. 



Q. By using the lactometer of the Board of Health you are not 

 able to tell what the temperature of a fluid would be if you inserted 

 the Centigrade thermometer ? A. No, sir ; I do not remember the 

 formal fact of conversion, always having a table at hand. 



Q. Did you test pure milk ? A. I tested pure milk. 



Q. How do you know it was pure milk ? A. Milk that is brought 

 to my house by the parties who always supplied it. 



Q. Did you see the cow milked from which the milk proceeded? 

 A. I did not. 



