vi ANIMAL FORMS 
parts gained from dissection and experiment, is essential to 
a full comprehension of what the student learns from text- 
book and teacher. 
The greater number of illustrations are new, and have 
been drawn or photographed from living or preserved ma- 
terial. When not otherwise accredited, the drawings have 
been made by Miss Mary H. Wellman and J. Carter Beard, 
to whom the authors extend their sincere thanks. Our 
obligations are also due to Mr. Walter K. Fisher, who has 
made the drawings of the vertebrate dissections; to Messrs. 
A. L. Melander and C. T. Brues, of Chicago, Ill. ; Mr. Wm. 
H. Fisher, of Baltimore, Md.; Rev. H. K. Job, of Kent, 
Conn.; Mr. Wm. Graham, of Pasadena, Cal.; and Dr. R. W. 
Shufeldt, of New York city, for numerous photographs. 
Davip STARR JORDAN, 
Haroup HEATH. 
