210 



Testing Milk and Its Products. 



per cent, of fat, a table is made that can be used for 

 calculating the amount due per 100 lbs. of milk at the 

 price per pound given, and the weight of milk delivered 

 by each patron is multiplied by the price per 100 lbs. of 

 milk shown in the table opposite the figure representing 

 his test. 



Example: A patron supplies 2470 lbs. of milk, testing 3.2 

 per cent, of fat; price per pound of fat, 25 cents; he should 

 then receive 24.70X.80=$19.76 (see above table). Another pat- 

 ron delivering 3850 lbs. of milk testing 3.8 per cent, will re- 

 ceive, at the same price per pound of fat, 38.50X.95=$35.57. 



The relative-value tables in the A-ppendix give the 

 price per 100 lbs. of milk testing between 3 and 6 per 

 cent, fat, when the price of three per cent, milk varies 

 from 30 to 90c. per 100 lbs. In using the tables, first 

 find the figure showing the price which it has been de- 

 termined to pay for 100 lbs. of milk of a certain qual- 

 ity, say 3 or 4 per cent.-milk; the figures in the same 

 vertical column then give the price to be paid per 100 

 lbs. of milk testing between 3 and 6 per cent. 



Example 1 : It has been decided to pay 90 cents per 100 lbs. 

 of 4 per cent.-milk. The figure 90 ig then sought in the table in 

 the same line as 4.0 per cent., and the vertical column in which 

 it is found gives the price per 100 lbs. of 3 to 6 per cent.-milk; 

 3.8 per cent.-milk is thus worth 85 cents per 100 lbs. and 4.5 per 

 cent.-milk, $1.01, under the conditions given. The prices of milk 

 of other qualities are found in the same way. 



Example 2: In the example referred to under Illustrations of 

 calculating creamery dividends (I b, 231), the figures for the 

 patrons Nos. 1, 2 and 3, would be as follows: 



