PREFACE TO THIRD EDITION 



In the Second Edition, June, 1916, the chapter on the Feeding 

 of Poultry by J. E. Dougherty was added to the book. 



The present, Third Edition, includes a number of minor changes 

 in, every chapter of the text, the substitution of cuts of the cows 

 of the four dairy breeds, which have broken the records for produc- 

 tion of milk and fat. The latest findings on the nutritive values 

 of feeding stuffs and the principles of feeding farm animals are in- 

 corporated. Tables havei been corrected to date. Many new cita- 

 tions to bulletins and other recent literature are made. 



F. W. Woll. 

 January, 1921. 



