1 10 PREFACE TO FIFTH EDITION 



favor with which the book was received far surpassed the expec- 

 tations of those responsible for its appearance, and led to three 

 reprintings of the original edition. Thus encouraged, the book 

 has been rewritten so as to bring it up to date and give it greater 

 clearness and accuracy, yet retaining the original plan without 

 any radical changes. 



A number of new illustrations are included. At the sug- 

 gestion of several instructors at various colleges, three new chap- 

 ters, III., VII., and XXXVIL, have been added. These addi- 

 tions meet the test applied to all parts of the book, namely 

 they treat concisely of subjects concerning which the beginner 

 should be informed before taking up more advanced studies 

 in animal husbandry. 



University of Minnesota, H. W. VAUGHAN. 



July, 1919. 



