INTRODUCTION Vll 



wish to devote some time to the study of dairy farming. 

 Three to five recitations per week and two laboratory periods 

 per week will usually be desirable. At least a part of the 

 laboratory exercises, and preferably all of them, should be 

 given in periods that are two hours long. If this much time 

 ca'inot be allowed, the laboratory period may be placed at the 

 en 1 of the day so that when farms are visited, it will be pos- 

 sible to take the longer time that is necessary. 



It is hoped that the book will also prove useful to farmers 

 WIG wish a better understanding of the principles involved 

 in the successful operation of a dairy farm. 



G. F. WARREN. 

 [THACA, N.Y., 



April 1, 1916. 



