vi : PREFACE 
aim of the author to give a well-digested, systematic treatment of 
the subject. It is hoped that the presentation will commend itself 
to the judgment of educators and farmers, and that a study of this 
book will aid them to a clear understanding of the principles of 
productive feeding of farm animals. 
Acknowledgment for loan of photographs or cuts is due to the 
Directors of the Agricultural Experiment Stations at Berkeley, Cal.; 
Ottawa, Canada; Ithaca, N. Y.; State College, Pa.; Burlington, Vie: 
Madison, Wis., and Uz s. Bureau of Animal Industry ‘ Professors 
K. C. Davis, S. B. Doten, David Griffiths, I. D. Iddings, Frank L: 
Peterson, E. A. Trowbridge, and Gordon H. True; American Guern- 
sey Cattle Club; W. J. Gillett, Rosendale, Wis.; A. W. Morris & Sons 
Corp., Woodland, Cal.; Publishers Breeders’ Gazette, Chicago, and 
Pacific Rural Press, San Francisco, Cal., and Hog Motor Company, 
Minneapolis. 
F. W. Wott. 
Davis, Cal., January, 1915. 
PREFACE TO SECOND EDITION 
Minor changes and corrections have been made in the present 
edition, and a chapter on Feeding Poultry, prepared by Prof. J. E. 
Dougherty, of the University of California, has been incorporated, 
in order that students and farmers may learn the main principles 
of feeding this important class of livestock. It is believed that the 
usefulness of the book will be further increased ee the addition and 
changes thus made in the text. 
Davis, CALIFORNIA, June, 1916. 
