APPENDIX C 209 



terial count of his milk, the dairy farmer can earn more 

 money than he does if he is careless and delivers milk 

 containing large numbers of bacteria. The adjustment 

 of the price to the bacterial count on the one hand, and 

 to the percentage of butter fat on the other hand, gives 

 a strong stimulation to the dairy farmer to produce 

 milk which is both clean and rich. Only small premiums 

 are necessary to give great stimulation in these two 

 respects. 



(h) Tuberculin testing of dairy cattle is an entirely 

 separate problem. It has become recognized that raw 

 milk to be safe for drinking purposes must be obtained 

 from cattle which are free from tuberculosis as deter- 

 mined by the tuberculin test. The securing of such 

 milk involves principles which are the same as those 

 above outlined, namely, that the producer must be paid 

 for the cost. More than half of the milk delivered to 

 the central station at Homer, is obtained from dairies 

 having herds which Have passed the tuberculin test. 

 These tests have been made as the direct result of a 

 special premium paid to the dairy farmers for milk from 

 tuberculin tested cows. This premium has been paid 

 in addition to the other premiums mentioned. 



Results 



The use of this system on a large scale has given all of the 

 results anticipated from the preliminary experimental work 

 carried out by Dr. North in old dairy barns in New Jersey. 

 The daily bacterial tests of milk carried out in the laboratory 

 of the central station of the New York Dairy Demonstra- 

 tion Company at Homer, N. Y., are now on file, and show 

 that, while there have been some irregularities, yet in general 

 the milk delivered to this station is clean, and has a bacterial 

 count which is far lower than can be obtained by ordinary 



