c 



PREFACE TO THE FOURTH ED 



In the present edition certain additions have been made and 

 the sections on the muscular and vascular systems rewritten 

 and considerably enlarged. In the section on the muscles 

 Reighard and Jennings has been followed rather closely, but 

 the entire group of muscles with exception of a very few belong- 

 ing to the reproductive organs and the ear have been worked 

 over in class and by private dissections during the progress of 

 revision. In addition to Reighard and Jennings, reference has 

 also been frequently made to Hyman's ''Laboratory Manual 

 for Comparative Vertebrate Anatomy;" Wilder and Gage's 

 "Anatomical Technology;" William's edition of Straus-Dur- 

 cheim's plates; Kingsley's "Comparative Anatomy;" Bensley's 

 "Anatomy of the Rabbit;" Cunningham's "Human Anatomy;" 

 Wilder's "Mammalian Anatomy;" Jayne's "Mammalian 

 Anatomy; The Skeleton of the Cat;" Eycleshymer's "Anatomi- 

 cal Names;" and numerous journals. 



A number of new drawings have been made for this edition, 

 five of which depict the muscles of the hind limbs — these, with 

 those already in the book, show more muscles than the average 

 student is likely to dissect. Other new pictures illustrate 

 the development of the vascular system. These have been 

 redrawn for the most part from the original papers to which 

 credit is given. The conventional figures of Boas showing the 

 phylogeny of the aortic arches are from Kingsley's Comparative 

 Anatomy. Huntington and McClure's colored figures showing 

 the development of the postcava have been so well reproduced 

 in black and white by Miss Hyman that they have been bor- 

 rowed and the figure showing the composite diagram of embryonic 

 veins of the cat has been redrawn to correspond with Hyman's 

 figures. The figure showing the adult venous system has been 



