TABLE OF CONTENTS. xxxi 



PAGE 



The Envelopes of the Cerebro-spiual Axis . . 660 



1. The Dura Mater . . . tj61 



2. The Arachnoid ... . 663 



3. The Pia Mater ....... 665 



Differential Characters in the Protecting and Enveloping Parts of the 



Cerebro-spinal Axis in other than Soliped Animals . . 666 

 Comparison of the Protective and Enveloping Parts of the Cerehro-spinal 



Axis of Man with those of Animals . . . 666 



Chapteb II.— The Spinal Cord .... 666 



External Conformation of the Spinal Cord . . 666 



Internal Conformation and Structure of the Spinal Cord . . 668 

 Differential Characters in the Spinal Cord of the Domesticated Mammals 



other than Solipeds ... . . 672 



Comparison of the Spinal Cord of Man with tliat of Animals . . 672 



Chaptek III. — The Encephalon . ..... 672 



Ai'ticle I. — The Encephalon as a Whole .... 672 



Article ii. — The Isthmus ....... 675 



External Conformation of the Isthmus ..... 675 



1. The Medulla Oblongata . . . 676 



2. The Pons Varolii . . . . . . .677 



3. The Crura Cerebri ... . . 677 



4. The Crura Cerebelli . . . . . .678 



5. The Talve of Vieussens ...... 679 



6. The Corpora Quadrigemina, or Bigemina .... 679 



7. The Optic Thalami ...... 679 



8. The Pineal Gland . . .... 680 



9. The Pituitary Gland . ... 681 

 Internal Conformation of the Isthmus . . . . .682 



1. The Middle Ventricle, ov Ventricle of the Optic Tualami 



2. The Aqueduct of Sylvius ..... 



3. The Posterior, or Cerebellar Ventricle . 

 Structure of the Isthmus ..•••• 



Differential Characters in the Isthmus of othei- than Sohped Animals 

 Comparison of the Isthmus of Man with that of Animals . 

 Article iir. — The Cerebellum . . • • • 



1. External Conformation of the Cerebellum . 



2. Internal Conformation of the Cerebellum 

 Differential Characters of the Cerebellum in other than Soliped Animal 

 Comparison of the Cerebellum of Man with that of Animals 



Article iv. — ^The Cerebrum . 



External Conformation of the Cerebrum . . 690 



1. The Longitudinal Fissure . . 690 



2. The Cerebral Hemispheres ... 691 

 Internal Conformation of the Brain . . 692 



1. The Corpus Callosum ... • 698 



2. The Lateral, or Cerebral Ventricles . 693 



3. The Septum Lucidum . . .694 



4. The Cerebral Trigonum (or Fornix) . • 694 



5. The Hippocampi .... 695 



6. The Corpora Striata ... . 69.T 



7. The Cerebral Choroid Plexus, and Velum Interpositum . 696 

 Structure of the Cerebrum . . ... 697 



Differential Characters in the Brain of other than Soliped Animals . 698 

 Comparison of the Brain of Man with that of Animals 



682 

 683 

 683 

 683 

 685 

 685 

 686 

 686 

 688 

 689 

 689 

 689 



698 



