PREFACE TO FIRST EDITION 



The writer is a graduate in agricultural science, in veter- 

 inary and human medicine, and has been connected with a 

 laboratory in which is examined the milk supply of a large 

 city, and finally has had considerable practical experience in 

 the production and distribution of clean milk. 



These facts are simply mentioned to show that the 

 book is written from various points of view. 



Much blame is attached to sundry persons engaged in 

 vending milk, but the unfortunate farmer is apt to receive 

 an unjust share because of the commonly unclean and there- 

 fore unsanitary condition of most market milk. While city 

 contractors and dealers may have much influence in 

 instructing and requiring the farmer to live up to recognized 

 standards of cleanliness, yet, after all, the chief responsibility 

 lies with the consumer. The essential object in the clean 

 milk crusade should be to awaken the public to the dangers 

 of unclean milk and to emphasize the fact that it is impos- 

 sible to produce and obtain clean milk except at unusual 

 expense. 



When the public is sufficiently aroused to the evils of 

 consuming unclean milk and evinces willingness to pay for 

 clean milk, there will be no difficulty about its production. 

 It is merely a question of supply and demand. 



