IV 



PREFACE 



ing more definite and to clarify our idea?. We hope you will enjoy 

 reading it. With design we have been somewhat dogmatic. You 

 will not agree with all the statements. We have read much of the 

 evidence on the different points, have weighed it for and against, 

 made up our minds and given you our opinion. This opinion is 

 the best solution of the problems at the present time that we can 



find. 



We wish to take the opportunity at this time to express our 

 appreciation to Professor H. H. Wing. For many years we have 

 been associated with him in the department of animal husbandry 

 at Cornell University, of which he is the head. His ideas have been 

 sound, his direction of our study and work all that could be desired. 

 Living and working with him is a pleasure. 



Members of the groups of teachers in the departments of animal 

 husbandry at Cornell University and at the University of Wis- 

 consin have helped us many times in crystallizing the opinions 

 that we have given to our readers. Professor H. E. Babcock, 

 Manager of the G.L.F. Exchange of Ithaca. New York, has also 

 helped. To all these and all breeders who have contributed pic- 

 tures and facts about their animals we express our appreciation. 



Professor F. B. Morrison has very kindly allowed us to use 

 some of the tables of the book " Feeds and Feeding" by Henry and 

 Morrison. This has saved us a great deal of work in our compila- 

 tion. We appreciate his courtesy. 





Ithaca. New York 

 June 15, 1923. 



