THE PRODUCTION AND CARE OF MILK 325 



raising cream. The most common method in Southern 

 homes where only one or two cows are kept is to pour 

 the milk as soon as drawn into shallow pans. 



NOTE TO THE TEACHER. Let pupils test with blue litmus paper 

 samples of buttermilk and whole milk of various ages or kept 12 to 30 

 hours at different temperatures. If any dairyman near you has a Bab- 

 cock milk-tester, try to plan a trip with the class to see it in operation. 

 Samples of first- and last-drawn milk, and of milk from several cows, 

 can be prepared in advance for testing. If a very small amount of 

 formalin or other disinfectant is added, the samples can be kept for a 

 number of days. If there is any money for school equipment, consider 

 the purchase of a Babcock milk-tester, costing $4.00 or more. Write 

 the Agricultural College of your state, asking which pattern to buy and 

 trom whom to order. Farmers will be pieasea iu nave pupils test their 



COW6. 



FIG. 210. MODERN MILK PAILS, TO KEEP OUT GERMS AND DUST 



