INTRODUCTION 



THE Manual is divided into two parts: 



I. Exercises relating to the value of common feeding stuffs used by 

 American stockmen, their chemical composition and digestibility, methods of 

 preparation, examination for purity, relative feeding values, etc. 



II. Exercises illustrating calculations of rations for farm animals, the 

 right and wrong uses of the various feeds for feeding cattle, horses, sheep, 

 swine, and poultry, and general problems connected with the feeding of farm 

 stock. 



The plan of the exercises follows in general that of the author's "Pro- 

 ductive Feeding of Farm Animals"; references in the case of individual exer- 

 cises are given to the chapters in which the necessary information may be 

 found. In many cases, references given under the literature of the subject 

 at the close of each chapter or hi footnotes must be consulted. A number of 

 tests for common impurities and adulterations of feeding stuffs are included 

 in the exercises. These call for some simple inexpensive apparatus, a list of 

 which is given at the back of the book. A standard collection of weed seeds 

 will be found very useful in identifying weed seeds in mixed feeds, grain 

 screenings, etc. 



