xii CONTENTS 



The Cerebellum ..... . 436 



The Mid-Brain Roof 437 



The Prosencephalon 437 



General Development of the Human Nervous System During the First 



Month 44 2 



His togenesis of the Nervous System " 448 



Epithelial Stage Cell Proliferation 449 



Early Differentiation of the Nerve Elements 453 



Differentiation of the Peripheral Neurones of the Cord and Epi- 



chordal Segmental Brain ...... :. . . '. 456 



Efferent Peripheral Neurones 45^ 



Afferent Peripheral and Sympathetic Neurones 459 



Development of the Lower (Intersegmental) Intermediate Neurones 472 



Further Differentiation of the Neural Tube '.-." 476 



The Spinal Cord. -47^ 



The Epichordal Segmental Brain ...".. 482 



The Cerebellum v . . - 495 



Corpora Quadrigemina . . _ -I ; . ', ' < 500 



The Diencephalon 501 



The Telencephalon (Rhinencephalon, Corpora Striata and Pallium) 508 



Rhinencephalon ..*... 510 



Corpora Striata and Pallium . ... . . . . 511 



The Archipallium 516 



The Neopallium \. 522 



Anomalies 530 



References for Further Study ..... . - . . . \ ". .... 531 



CHAPTER XVIII 



THE ORGANS OF SPECIAL SENSE ........ 533 



The Eye ..'..... 533 



The Lens . . . 535 



The Optic Cup 539 



The Retina . . '! , . r . .540 



The Chorioid and Sclera ....'. 4 ....... 545 



The Vitreous . . . 545 



The Optic Nerve . . . .546 



The Ciliary Body, Iris, Cornea, Anterior Chamber 547 



The Eyelids 548 



The Nose 549 



The Ear 552 



The Inner Ear ; .... . . . ^^ 2 



The Acoustic Nerve -.'. . ; . .. 558 



The Middle Ear 559 



