viii Preface. 



too miieli to hope that every coiielusiou will stand 

 the test of further investigation and experience. 



Dairy practice in the United States owes mnch 

 to the investigations of the Agricultural Experiment 

 Stations, Of the results of their labor free use 

 has been made in various ways, and in many cases 

 without specific mention at the particular i)lace. 

 Without wishing to make distinctions, particular 

 acknowledgment is here rendered to the reports 

 and bulletins of the Stations in Maine, New Hamp- 

 shii-e, Vermont, Connecticut (Storrs), Canada, New 

 York (State), New York (Cornell), New Jersey, 

 Pennsylvania, Illinois, Iowa, Wisconsin and Minne- 

 sota. For those who wish to make more extended 

 investigations, a bibliography is added in the Ap- 

 pendix, giving references to many bulletins. 



Thanks are due to D. H. Burrell & Co., the 

 Vermont Farm Machine Co., the DeLaval Separator 

 Co., the Star Milk Cooler Co., the Champion Milk 

 Cooler Co., J. F. Hodgkin, and F. B. Fargo & Co., 

 for the use of electrotypes. 



Acknowledgment is also due my colleagues, 

 Messrs. Cavanaugh, Durand, Hall and VanWagenen, 

 for valuable assistance, and to Professor L. H, 

 Bailey for much friendly counsel and many useful 

 suggestions. 



HENRY H. WING. 



Cornell University Dairy, 

 January 1897. 



