CONTENTS Xlll 



The Telencephalon (Rhinencephalon, Corpora Striata and Pallium) . 538 



Rhinencephalon 540 



Corpora Striata and Pallium 541 



The Archipallium 546 



The Neopallium 552 



Anomalies 560 



References for Further Study 561 



CHAPTER XVIII 



THE ORGANS OF SPECIAL SENSE 563 



The Eye 563 



The Lens 565 



The Optic Cup 569 



The Retina 570 



The Chorioid and Sclera 575 



The Vitreous 575 



The Optic Nerve 576 



The Ciliary Body, Iris, Cornea, Anterior Chamber 577 



The Eyelids 578 



The Nose . 579 



The Ear 582 



The Inner Ear 582 



The Acoustic Nerve 588 



The Middle Ear 589 



The Outer Ear 590 



Anomalies 591 



References for Further Study 592 



CHAPTER XIX 



TERATOGENESIS 593 



Malformations Involving More Than One Individual 593 



Classification, Description, Origin 593 



Symmetrical Duplicity 594 



Origin of Symmetrical Duplicity 599 



Asymmetrical Duplicity 600 



Origin of Asymmetrical (Parasitic) Duplicity 602 



Malformations Involving One Individual 604 



Description, Origin 604 



Defects in the Region of Neural tube 604 



Origin of Malformations in the Region of Neural Tube .... 607 



Defects in Regions of the Face and Neck, and their Origin . . 608 



Defects in the Thoracic and Abdominal Regions, and their Origin 610 



