xvi CONTENTS 



Page 



II. Spino-thalamic Tract, 468 



III. Dorsal Spino-cerebellar Tract, 469 



IV. Ventral Spino-cerebellar Tract, , 469 



Descending Tracts, 470 



I. The Pyramidal Tracts, 470 



II. The Colliculo-spinal Tract, 471 



III. The Tract from the Nucleus of the Posterior or Medial 

 Longitudinal Fasciculus, 471 



IV. The Rubro-spinal Tract, 472 



V. The Deitero-spinal Tract, 472 



VI. The Fasciculus of Thomas, 473 



VII. Helweg's Tract, 473 



VIII. The Septo-marginal Tract, 473 



IX. The Comma Tract of Schultze, 473 



Fundamental Columns or Ground Bundles, 474 



A Two-neurone Spinal Reflex Arc, 475 



A Three-neurone Spinal Reflex Arc, 475 



A Cerebellar Arc, 476 



A Cerebral or Pallial Arc, 477 



Technic, 477 



The Brain, 479 



General Structure, 479 



Segmental Brain and Nerves, 480 



Suprasegmental Structures, 484 



The Hindbrain or Rhombencephalon, 485 



The Medulla Oblongata or Bulb, 485 



The Pons, 488 



The Cerebellum (also p. 507), 488 



Technic, 488 



Practical Study, 489 



1. Transverse Section of the Medulla through the Decussation 



of the Pyramidal Tracts (Motor Decussation), 489 



2. Transverse Section of the Medulla through the Decussation 



of the Fillet or Lemniscus (Sensory Decussation), .... 491 



3. Transverse Section of the ISIedulla through the Lower Part 



of the Inferior OHvarj^ Nucleus, 493 



4. Transverse Section of the ^Medulla through the IMiddle 



of the Olivary Nucleus, 497 



5. Transverse Section of the Medulla through the Entrance of 

 the Cochlear Root of Nerve VIII, 497 



6. Section through the Hindbrain at Level of Junction of Pons, 

 and Cerebellum and Entrance of Vestibular Nerve, . . . 505 



7. Transverse Section of the Hindbrain through the Roots of 

 Nerves VI (Abducens) and VII (Facial), 508 



8. Transverse Section of the Hindbrain through the Roots of 

 Nerve V (Trigeminus), 510 



The Cerebellum, 5^3 



The Cerebellar Cortex, S'^5 



The Isthmus, S^i 



Practical Study, 521 



