MILK. 



255 



TABLE SHOWING THE QUE\ ENXE LACTOMETER 

 DEGREES CORRESPONDING TO THE SCALE OF 

 LACT03IETERS GRADUATED FROM 60 TO lliO. 



In taking the specific gravity of milk try 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 + .4 = 29.9 at 60'; if 34.0 at 52°, 

 it will be -'bou^ 3/0 - .8 = 33.2 at 6o^ By reference to the 

 following table we ^no it is more correctly 33.0. 



