CONTENTS. xLi 



General Development of the Human Nervous System During the First 



Month 470. 



Histogenesis of the Nervous System 485 



Epithelial Stage — Cell Proliferation 486 



Early Differentiation of the Nerve Elements 490 



Differentiation of the Peripheral Neurones of the Cord and Epichordal 



Segmental Brain 493 



Efferent Peripheral Neurones ... 493 



Afferent Peripheral and Sympathetic Neurones ... . 496 



Development of the Lower (Intersegmental) Intermediate Neurones . 509 



Further Differentiation of the Neural Tube. 513 



The Spinal Cord .... . . . 513 



The Epichordal Segmental Brain . 519 



The Cerebellum ..... 532 



Corpora Quadrigemina . -537 



The Diencephalon 538 



The Telencephalon (Rhinencephalon, Corpora Striata and Pallium) . 545 



Rhinencephalon . . 547 



Corpora Striata and Pallium . 548 



The Archipallium 553 



The Neopallium . . - 559 



Anomalies 5°7 



Practical Suggestions 568 



References for Further Study .... . 571 



CHAPTER XVIII. 



The Organs of Special Sense ... 573 



The Eye ... • • S73 



The Lens . . ... - 575 



The Optic Cup • -579 



The Retina. . • • ■ • 5 8 ° 



The Chorioid and Sclera • • 5 8 5 



The Vitreous . . ... • 5 8 5 



The Optic Nerve • S 86 



The Ciliary Body, Iris, Cornea, Anterior Chamber . . . 587 



The Eyelids . . ... ■ 5 88 



The Nose . ... • 5 8 9 



The Ear 59^ 



The Inner Ear 59 2 



The Acoustic Nerve • • • 59 8 



The Middle Ear -599 



The Outer Ear 6o ° 



Anomalies • • 



Practical Suggestions .... 602 



References for Further Study 6o 3 



