CONTENTS. 



Pafte 



§ 1. Historical Introduction 3 



§ 2. Of the Spinal Column 12 



§ 3. Comparison of the Spinal Column 25 



§ 4. Of the Skull 28 



§ 5. Of the Teeth 36 



§ 6. Comparison of the Skull and Dentition 41 



§ 7. Of the Bones of the Anterior Extremity 45 



§ 8. Of the Bones of the Posterior Extremity 62 



§ 9. Comparison of the Bones of the Hind-foot 74 



§10. Physiological Summary 77 



§11. Geological Summary ^2 



