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THE ANALYSIS OF MILK. 



hydrometer with the thermometer attached. This is about 

 seven inches long and has a range of from 1.000 to 1.060. 

 There are several different forms of lactometers on the market 

 but they are not any better adapted for milk than is the hydrom- 

 eter to which reference has just been made. All readings 

 should be made whenever possible at 60° F. (15.6°C.). When- 

 ever this cannot be done correction must be made in accordance 

 with the table below, taken from Richmond (12). 



TABLE IX. 

 FOR CORRECTING SPECIFIC GRAVITY TO 60°F. 



The specific gravity of milk from normal, healthy cows will 

 vary from 1.029 to 1.035 at 60° F (15.6° C). The average for 

 normal milk as determined by the writer from a large number 

 of samples agrees well with the figures obtained elsewhere, 

 namely 1.032. Too much stress cannot be placed on the spe- 

 cific gravity determination, because it is a simple matter to add 



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