CONTENTS 
CHAPTER I. 
PAGE 
INTRODUCTORY . ‘ “8 I 
CHAPTER II 
THE SKELETON oF BIRD AND REPTILE : é ; F : 6 
The fore limb—The breastbone and the bones that meet at 
the shoulder joint—The ribs—The hind limb—The skull 
—The vertebral column, 
CHAPTER III. 
EVIDENCE OF RELATIONSHIP TO REPTILES . é m 29 
CHAPTER IV. 
CONNECTING LINKS - : 41 
CHAPTER V. 
Tue PROCESS OF CHANGE FROM A REPTILE TO A BIRD . a. 183 
