Productive farming . d profits should not be kept. Manydo not pay their board. Keeping the dairy record is made easy by having a goodspring balance hanging near the record sheet in the barn(Fig. 222). The Babcock Test.—^The method of testing milk fordetermining the amount of fat was devised by Dr. S. , of the Wisconsin Experiment Station. It is verysimple and gives accurate results. A set of the apparatusused in this test is shown in Fig. 223. Exercise.—Testing Milk and Cream.—Some one nearthe school, who has a Babcock test outfit, may be invited 334 PRODUCTIVE FARMING to bring it bef
Productive farming . d profits should not be kept. Manydo not pay their board. Keeping the dairy record is made easy by having a goodspring balance hanging near the record sheet in the barn(Fig. 222). The Babcock Test.—^The method of testing milk fordetermining the amount of fat was devised by Dr. S. , of the Wisconsin Experiment Station. It is verysimple and gives accurate results. A set of the apparatusused in this test is shown in Fig. 223. Exercise.—Testing Milk and Cream.—Some one nearthe school, who has a Babcock test outfit, may be invited 334 PRODUCTIVE FARMING to bring it before the class and give a lesson in testing sam-ples of milk and cream. Or perhaps it will be as well for theclass to take a trip to a near-by creamery and observe theoperation. If possible the school should own an students could then test samples of milk from the cowsof the neighborhood. Exercise.—Skim Milk and Buttermilk.—Samples of skimmilk from two or more separators should be tested to deter-. FiG. 222.—The weight of each cows milk is written on the record sheet. mine which one removes the cream the best. If butter-milk is tested, this will tell how well the churning has removedthe butter. Principles of the Babcock Test.—The testing of milk bythis method is founded on the fact that very strong acid willdissolve all the substances in the milk except the butter particles of fat are thus set free from the rest. As thefat is the lightest part of the milk, it will rise to the takes place in a few minutes if the bottles of milk areplaced in a whirling machine (centrifugal). In other words,the heavier parts of the milk are thrown to the bottom. CATTLE PRODUCTS 335 In making the test a definite, or measured, amount ofmilk is put into a bottle with a long, narrow neck and justenough acid is mixed with this to set free the fat. After thefat is brought to the top by the whirling force, some hot wateris added to fill the bottle up to the neck.
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu, booksubjectagriculture
