38 



PROFITABLE DAIRYING 



6. Reading the fat. The fat column is read 

 from its highest point to its lowest point while 

 yet hot (130-145 degrees F.) and before it has 

 had time to contract. If the fat should get cold 

 it may be melted by placing the bottles in hot 

 water well up to the neck. 



If both ends of the fat column are above the 

 zero point, note the reading of these two points 



lALs 



Reading: the test by use of dividers. 

 The dividers in the first posi- The dividers in the second po- 



tion for reading the test. sition. 



Fig. 8. 



and take their difference. For example: If the 

 lowest point of the fat is 1.8 per cent and the 

 highest is 5.6 per cent, then the per cent of fat 

 is 5.6 — 1.8 or 3.8 per cent. A quicker way is 

 to place a pair of dividers against the neck of 



