iv PREFACE 



The various feeding standards for the different classes of farm animals 

 are then fully discussed, and there is presented a new series of standards 

 The Morrison (Modified Wolff-Lehmann) Standards, which are based 

 upon the recent findings of the scientists in this and other countries. 

 To point out some of the economic principles which should be considered 

 in the feeding of live stock, there is included the chapter entitled : * ' Econ- 

 omy in Feeding Live Stock. " 



Part II gives accurate information regarding the properties and value 

 of practically all the feeding stuffs used in America, including the grains, 

 the mill and factory bj'-products, the hays and other roughages, silage, 

 roots, and soilage. Finally, the various methods of preparing feed are 

 discussed and the vital relation of animal husbandry to the economical 

 maintenance of soil fertility, by the return to the soil of the manure re- 

 sulting from feeding stuffs, is made clear. 



Part III presents in carefully arranged, condensed form the most im- 

 portant findings of the experiment stations of America and the Old 

 World on the feeding and care of horses, dairy cattle, beef cattle, sheep, 

 and swine. The value of the many different feeds for each class of 

 live stock is shown by the results of actual feeding trials. Instead of 

 giving merely the results of single typical trials, in most cases the data 

 for all the similar trials on a given subject have been carefully compiled 

 and averaged together. The feeder is thus given more trustworthy in- 

 formation concerning the relative value of the different feeds than has 

 ever before been presented. In addition to this information, practical 

 suggestions are given on the care and management of each kind of stock. 



Neither time nor expense has been spared on the compilation of the 

 exhaustive Appendix Tables, which show the digestible nutrients and the 

 fertilizing constituents of all important American feeds. An idea of 

 the labor involved in the preparation of the book may be gained from 

 the fact that the compilation of these Appendix Tables alone required 

 time equivalent to one person working thruout three years, in addition 

 to the supervision of Prof. Morrison. 



In order to present adequately the results of the many important in- 

 vestigations carried on d :'ng the past few years, it has been necessary 

 to increase the size of the book by over 70 pages. To meet numerous 

 requests for an illustrated edition of Feeds and Feeding, this revision 

 is being issued in two forms: (1) with numerous plate illustrations, and 

 (2) as previously, in the standard form, without plate illustrations. 



The sincere thanks of the authors are hereby extended to the many 

 friends who by suggestions and reports of experiments and experiences 

 have furnished invaluable assistance in this and the previous revisions 

 only by such help so generously given has the making of this book 

 been possible. Acknowledgment is especially due to Mrs. Elsie Bullard- 

 Morrison for aid thruout the entire preparation of the book. 



August, 1922. 



