MILK. 



22' 



TABLE SHOWING THE QUEVENNE LACTOMETER 

 DEGREES CORRESPONDING TO THE SCALE OF 

 LACTOMETERS GRADUATED FROM 60 TO 120. 



In taking the specific gravity of milk by means of a lac- 

 tometer, the temperature of the milk should not vary more 

 than 10° either way from 60° F. The following tables 

 show the proper corrections for temperature to be made, if 

 the milk was either warmer or colder than 60° F., the tem- 

 perature to which the specific gravities of all liquids are 

 usually referred. 



In practical work sufficiently accurate corrections for tem- 

 perature may generally be made by adding .1 to the lacto- 

 meter reading for each degree above 60° F. , and by subtract- 

 ing .1 for each degree below 60°; e.g., if the reading at 64° 

 is 29.5, it will be about 29.5 -f- .4 = 29.9 at 60°; if 34.0 at 52°, 

 it will be about 34.0 — .8 = 33.2 at 60°. By reference to the 

 following table we find it is more correctly 33.0. 



