xviii CONTENTS 



PAGE 



On the Psychic, or Mental, Brain Cells - 322 



On the Psychic or Mental Brain Cells - - 326 



The Neurons, generally - 329 



The Neuron, or Nerve Unit - 334 



Neurogenesis, or Neuronogenesis - 340 



Neuronogenesis, or Neural Histogenesis, and Neural 



Nutrition - - 342 



On what is signified by the expression " The Nervous 

 System," in connection with Life, Nutrition, and 

 Vital Results - 351 



The Evolution of the Systemic Nervous System - - 354 



On the Evolution of the Common Nervous System 



Sympathetic and Systemic - 359 



The Distinctness, and Relationships, of the two 



Nervous Systems in Structure, and Function - - 363 



What Distinctness of the Systemic Nervous System 



implies - - 368 



What the Distinctness, and Relationships, of the Nervous 



Systems lead to - 371 



On the division of the "Neural Work" as exemplified 

 in " The Nervous System " in its respective parts of 

 Sympathetic and Systemic - 376 



The Combination of Sympathetic and Systemic Muscular 



Innervation - - 387 



The Principle of Reciprocity between the Sympathetic 



and Systemic Nervous Systems - 390 



Nervine Secretion and Excretion - - - - - 394 



On the Development of some of the Organs of Sense, and 

 the manner of Arrangement and Distribution of the 

 Cerebral and Spinal Meninges at the openings of 

 exit of the Cerebro-spinal Cavity - - 397 



