PREFACE 



This book supersedes the author's Text-book of Veterinary Anatomy. A 

 comparison of the two will show the new title to be justified by the extent and 

 character of the changes which have been made. 



The number of illustrations has been increased from 588 to 725. More than 

 three hundred new and original figures have been prepared. Nearly all of these 

 are reproductions of photographs, most of which were taken by the author. The 

 preparation of the prints for reproduction has been executed by Mr. W. J. Norris 

 with unusual care and skill. 



Continued observations of well-hardened material and frozen sections have led 

 to a considerable number of modifications of statement. It is scarcely necessary 

 to say that the recent literature, so far as available, has been utilized. 



Many changes in nomenclature have been made. Most of the synonyms have 

 been dropped or relegated to foot-notes. Exceedingly few new names have been 

 introduced. Nearly all eponyms have been eliminated, on the ground that they 

 are not designative and are usually incorrect historically. The changes made in 

 this respect are in conformity with the report of the Committee on Revision of 

 Anatomical Nomenclature which was adopted by the American Veterinary Med- 

 ical Association two years ago. Progress in the direction of a simplified and uni- 

 form nomenclature is much impeded by the archaic terminology which persists to 

 a large extent in clinical literature and instruction. 



The author is under special obligation to Professors EUenberger, Baum, and 

 Schmaltz, and to their publishers, for permission to use or to copy figures from 

 their excellent works. Their generosity in this matter has been of great value to 

 those who are unable to use the German literature. A few illustrations have been 

 taken from other sources and credit has been given in each case. 



For helpful suggestions and for assistance in the reading of the proof-sheets 

 the author is much indebted to his colleague. Dr. F. A. Lambert. 



Great credit is due the publishers for their determination to spare neither 

 pains nor expense in attaining a high degree of typographical excellence. 



Septimus Sisson 

 The Ohio State Univeesity, Columbus, Ohio. 

 September, 1914. 



