ACKNOWLEDGMENTS 



IN the preparation of this manual the authors have used 

 freely every available source of information. They are in- 

 debted to Pres. H. J. Waters, Prof. E. L. Holton, Prof. 

 Albert Dickens, Prof. J. W. Searson, Prof. H. L. Kent, Prof. 

 G. H. Hine, Mr. C. F. Chase, and Mr. W. T; McCampbell, 

 of Kansas State Agriculture College, for suggestions and 

 assistance in the preparation of this manual. 



They are also indebted to the Animal Husbandry Depart- 

 ment of Purdue University for illustrations Nos. 15, 21, 22, 

 and 23 ; to the Animal Husbandry Department of Kansas 

 State Agricultural College for illustrations Nos. 18 and 20; 

 to the Dairy Department of Kansas State Agricultural Col- 

 lege for illustration No. 19 ; and to Mr. H. Yuasa for assist- 

 ance in the preparation of drawings. 



Material taken from other sources has been properly 

 credited where it appears in the manual. 



vu 



