PREFACE 



The production and handling of clean milk is based on scientific 

 principles. It is true that many of these principles are simple in their 

 application and oftentimes on account of their simplicity they are 

 overlooked and neglected. It is the purpose of this laboratory guide 

 to enable the student to better understand the application of science 

 to clean milk production, and to impress on his mind the necessity for 

 attention to detail in this branch of Dairy Industry. 



Our ideas concerning the best methods of clean milk production 

 are constantly changing. The Author recognizes that this will 

 necessitate frequent revision of this book and an effort will be made to 

 keep this laboratory guide thoroughly up-to-date. 



H. E. Ross. 



Dairy Laboratories 



New York State College of Agriculture . 

 at Cornell University 

 Sept. 14, 1915 



