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Missouri Agricultural Report. 



compass, place one point at zero and read the figure indicated. A 

 quantity of fat which would extend from zero to one, or from one 

 to two, would be one per cent. A quantity of fat which would 

 make a column extending from zero to four would be four per 

 cent. Notice the fine divisions on the test bottle. There being 

 five marks for each per cent., all divisions between, then, must in- 

 dicate two-tenths of a per cent. For illustration, suppose the milk 

 tested 4.6 per cent, (as in figure 23), this means simply that there 

 are 4.6 pounds of fat in 100 pounds of this milk. Example : How 

 many pounds of butter fat are there in 473 pounds of milk, which 

 tests 4.6 per cent? This will read, 473 times .046 equals 21.758. 

 There are then 21.758 pounds of butter fat in that quantity of 

 milk. Example: How many pounds of butter fat in 237 pounds 

 of milk testing 3.5 per cent? This reads, 237 times .035 equals 

 8.295. There are then 8.295 pounds of butter fat in 237 pounds 

 of milk testing 31/2 per cent. Example : How many pounds of but- 

 ter fat in 193 pounds of milk which tests 3.8 per cent? 



. Skim Milk — First — Make sure that the bottles and pipette 

 are thoroughly clean. If the pipette has been used in testing whole 



Skim milk test bottle. 



milk or cream it must be well washed before sampling skim milk. 

 The mixing of the sample and the process of adding it to the 

 test bottle, figure 24, are the same as described for whole milk. 



