10 July, 1918.] The Bdbcoch Tester on the Farm. 



403 



It will be noticed that while the bottom of the fat column is straight 

 and distinct the top shows a meniscus or hollow, and one may be in doubt 

 how to take the measure. This should be the full length of the column 

 where the fat is in contact with the glass, or, as is shown in the illustra- 

 tion, measure from a to h — not to c or d. Measure the fat column with 



3a. — Cabinet for Chart. 



the compass ; place one point on the zero and see how far the other point 

 reaches. This will show how many spaces the fat fills, and the reading 

 gives the correct percentage of fat in the milk. 



Calculating the result. — The weight of the milk given by the cow, 

 multiplied by the test and divided by one hundred, gives the amount of 



