12 PREFACE 



manner as to make it intelligible to stockman and veterinarian 

 alike. This is at present the main field of swine pathology and 

 practice, and if I have succeeded in accompUshing this object I 

 feel well repaid for the time and labor involved in compiling the 

 work. 



I wish to acknowledge my indebtedness to the works of many 

 modern authors for helpful information, and especially so to Dr. 

 Craig, of Purdue University; Dr. Kaupp, of Spartanburg, S. C; 

 and Prof. Plumb, of Ohio State University. The works of these 

 authors have been the source of many valuable points in their 

 respective fields. 



I also wish to extend thanks to the many State and Federal 

 officials who have aided me in every possible manner. Appre- 

 ciation is especially due Dr. George R. White, State Veterinarian 

 of Tennessee, for many valuable suggestions and the excellent 

 article on Castration and Spaying, as well as numerous photo- 

 graphs; Dr. John R. Mohler, of the United States Bureau of 

 Animal Industry; Dr. M. I. Dorset, Dr. W. B. Niles, and many 

 others who have freely assisted me in many ways. 



I also wish to thank the many breeders and swine-breeding 

 associations for their help in preparing and illustrating the section 

 on Breeds and Breeding of Swine. 



Charles F. Lynch. 



324 South Third Street, 



Terre Haute, Ind. 

 November, 1914. 



