SUGGESTIONS 393 



country, care must be taken that it is clean, wholesome, 

 and sanitary in every particular. 



PRACTICAL QUESTIONS 



1. Give the composition of milk. 2. Define the following terms : 

 butter fat, cream, sterilized milk, whey. 3. What is the purpose 

 of the Babcock test? 4. What diseases may be transmitted to 

 man by unhealthy cows? 5. Discuss the relation between bacteria 

 and milk. 6. How do bacteria get in milk? 7. Are all milk 

 bacteria harmful? 8. Explain the process of butter making as you 

 have seen it. 9. How does your father dispose of his milk? 

 10. What is the best way of washing milk utensils? 11. Should 

 the cows be fed during milking time ? 12. Why should a farmer 

 keep records of his cows ? 



HOME EXERCISES 



1 . Report on the following 



1. Number of pounds of milk annually produced by the home 



herd. 



2. Number of cows. 



3. Number of pounds per cow. 



4. Number of pounds of butter fat per cow. 



5. Income of the dairy. 



2. It is important on the farm to keep careful and exact records. 

 Let each boy of the class take one cow and test her milk for fat once 

 a week for two months, using the school tester if there is none at 

 home. It is better to test the entire milking of one cow thoroughly for 

 a number of successive weeks than to come to quick conclusions on 

 certain members of the herd from one or two tests. 



3. Take apart your cream separator and describe all the parts. 



4. Describe your own dairy from a sanitary standpoint. 



SUGGESTIONS 



1 . One of the most useful pieces of apparatus for real work in a 

 school is the Babcock tester. Aside from its practical value, the 

 testing of milk is an interesting and fascinating experiment. Milk 

 from different cows may be brought from home, if there is no tester 

 there. As soon as the practical value of a tester has been made clear 



