CONTENTS. XVll 



PASB 



Brachial Plexus and the Principal Nerves of the Right Arm and Scapular 



Region 379-387 



Nervus Vagus 387-394 



Nervus Sympathicus (sympathetic nerve) 394 



fcSuperior cervical ganglion 395 



Thyroid or middle cervical ganglion 395 



Vertebral or inferior cervical ganglion 395 



NN. splanchnici 395 



Ganglion semilunare 396 



Abdominal sympathic 396 



Relations of the Myeleneephalic and Sympathic Nerves 396-398 



Structnre of Nervous Matter 398-399 



CHAPTER X. 



THE ENCEPHALON OR BRAIN. 



General Considerations 400 



Importance and difficulty of the study 400 



Methods of studying the brain 400 



Consideration of the Brain of the Frog and Mendbi'anchus as Simple Brains.., 403-403 



Partial vocabulary of encephalic names 403-404 



Encephalic Segments 404 



Names and synonyms, tabular arrangement 405 



Unequal morphical value of the segments 406 



Advantages in using segmental names 406 



Names of the brain cavities 406 



Objections to the names commonly used 406 



Amphibian Brain — Tabular Arrangement of its Principal Parts 409 



Ideal, Simple Brain 409 



General Constitution of the Encephalic Segments 413 



Metencephalon, epencephalon, mesencephalon, diencephalon, prosen- 

 cephalon, rhinencephalon 413 



Relations of the cnelise 413 



Comparison of the brain with a house 413 



Arachnoidea, pia, endyma 413 



Telae and plexuses 414 



Foramen of Magendie 414, 483 



Complete circumscription of the brain cavities 414 



Conarial tube , 415 



Study of the Amphibian Brain 415 



Obtaining and killing the animals 415 



li^ection of the brain 416 



Exposure of frog's brain 416 



Exposure of the brain of Menobranchus 417 



Preservation of amphibian brain 418 



Labeling 418 



General Inspection of the Amphibian Brain 418-430 



Dissection of the amphibian brain 430-i33 



