XVI 11 TABLE OF CONTENTS. 



SECTION SECOND. Structure of the Nervous System. 



1. Structure of the nerves . . . . . . 438 



Perineurium Bloodvessels ...... 438 



A. The spinal nerves ; their roots ; ganglion-cells and ganglion- 



fibres Pacinian bodies . . . . . 439 



B. Ganglionic nerves ; their ganglion-cells and ganglion-fibres 



Distribution of the latter ..... 444 



c. The encephalic nerves : 1. The fifth pair ; 2. The motor nerves ; 

 3. Those of special sensation ; first pair, and optic nerve ; 

 optic chiasma. Five layers of the retina ; acoustic nerve. 

 Distribution of vestibular and cochlear branches . . 446 



2. Structure of the nervous centres. 



A. The spinal cord ; longitudinal and horizontal fibres of its white 



matter ; fibres of its gray substance ; 'various forms of cells in 

 latter ..... 'V ." . 455 



Do the fibres of the cord ascend to the brain ? . . 458 



B. Structure of the encephalon. 



1. Medulla oblongata and pons Varolii. 2. Cerebellum ; its 

 gray matter ; peculiar cells in ferruginous layer. 3. The 

 ganglion of the cerebrum ; corpora quadrigemina ; optic 

 thalami ; corpora striata. 4. Cerebral hemispheres ; their 

 white substance ; their gray matter . . 460 



The membranes and vessels of the nervous centres. 



1. Pia mater ; plexus choroides ; ependyma ventriculorum. 2. 

 Arachnoid. 3. Dura mater; vessels of preceding membranes ; 

 lymphatics of do. ; nerves of do. ; vessels of encephalon and 

 cord. Chemical composition of the nervous centres ; quantity 

 of fat in the brain ; do. of phosphorus . . . 468 



Functions of the nervous system . . . . . 474 



Pathological states of the nervous centres . . . 475 



CHAPTER XI. 



THE MEMBRANES. 



Typical forms of papillae, villi, and glands .... 475 

 I. THE SKIN. 



A. The corium ; its structure ; the tactile papillae . . .476 



B. Basement-membrane, c. Epithelium Epidermis, and stratum 



Malpighianum their absolute and relative thickness. Che- 

 mical composition, and physical properties of the skin its 

 bloodvessels, lymphatics, and nerves Development of the 

 skin Regeneration of do. . 4 .,. ; . . 479 



Appendages and accessary, organs of the slcin : 1. Subcutaneous bursae 

 mucosse ; 2. Sebaceous glands Various forms Minute structure 

 Development ; 3. Sweat-glands their number Volume Ag- 

 gregate length Minute structure Ceruminous glands . . 486 

 Functions of the skin ....... 492 



Pathological states of the skin : 1. Of the epithelium ; 2. Of the corium ; 



3. Of the sebaceous glands . . . . . .493 



