Xll CONTENTS. 



Of Bone: The Skeleton. Structure and Chemical Composition of Bone. Sources of its Con- 

 stituents. The Process of Ossification. Experiments on the Growth of Bone. Influence of 

 Physical Agents on Development and Nutrition Page 243 



CHAPTER XIV. 



OF THE NERVOUS SYSTEM. 



Divisions of the Nervous System. Cerebro-spinal and Sympathetic. Fibrous and Vesicular. 



Structure and Functions of Nerve Fibres. Centripetal and Centrifugal. Rate of Conductibility. 



Anatomical Examination of 'the Structure and Functions of Nerve Vesicles. They diffuse Influ- 

 ences, are Magazines of Force. Element of Time introduced by Registering Ganglia. Oxida- 

 tion necessary to Nerve Activity. Necessity of Repair and Rest. Electrical Examination of 

 the Functions of Vesicles. Anatomical and Electrical Examinations agree. 



Automatic Nerve Arc. Cellated Nerve Arc. Multiple Arcs. Commissures. Registering Nerve 

 Arcs. Sensorium. Influential Arc. 



Suggestions derived from cerebral Structure respecting the Soul. Its independent Existence and 

 Immortality. 



Ideas of Time and Space. Objective, subjemive, and impersonal Operations. Vestiges of Im- 

 pressions and their Interpretation. Finite Nature of Knowledge. Mental Emotions 258 



CHAPTER XV. 



THE SPINAL AXIS. 



Primitive Development of Nervous System. Itsflnal Condition in different Vertebrates. 



The Spinal Cord: its Structure. Its Membranes. Its Thirty-one Pairs of Nerves. Proper- 

 ties of their Roots. Functions of the Cord. BeWs Discovery. Transmission of Longitudinal 

 and Transverse Influences. Reflex Action of the Cord. Nature of Reflex Action. Motor and 

 Sensory Tracts of the Cord. Summary of its Functions. 



The Medulla Oblongata : its Structure and Functions. 



The Pons Varolii : its Structure and Functions. 



Dr. Carpenter's Views of the Analogy between the Spinal Cord of Vertebrates and the Ventral 

 Cord of Articulates 291 



CHAPTER XVI. 



OF THE BRAIN. 



The Brain: its Structure. Its Motor and Sensory Parts, Hemispheres, and Commissures. 

 The Sensorium. Variations of the Hemispheres in Size and Weight. Instrumental Nature 

 of Cerebrum. The Cerebellum : its Structure and Functions. Co-ordinates muscular Motions. 

 Connection with Amativeness. Phrenology. Conditions of Action of Brain. 

 Symmetrical Doubleness of the Brain. Function of each Half, and of both conjointly. Independ- 

 ence and Insubordination of each Hemisphere. Double Thought. Alternate Thought. Senti- 

 of Pre-existence. Loss of Perception of Time 313 



CHAPTER XVII. 



OF THE CRANIAL NERVES AND THE GREAT SYMPATHETIC. 



Enumeration of the Cranial Nerves. The Third Pair, or Oculo-motor. The Fourth Pair, orPa- 

 thetici. The Fifth Pair, or Trigemini. The Sixth Pair, or Abducentes. Illustrations of the 

 Third, Fourth, Fifth, and Sixth Pairs. The Seventh Pair, or Facial Illustration of the 

 Facial. The Ninth Pair, or Glosso-pharyngeal. Illustration of the Glosso-pharyngeal. The 

 Tenth Pair, or Pneumogastric. Illustration of the Pneumogastric. Illustration of the Laryn- 

 geals. The Eleventh Pair, or Spinal Accessory. The Twelfth Pair, or Hypoglossal. Il- 

 lustration of the Hypoglossal. 



The Phrenic Nerve. 



Of the Great Sympathetic System. Position, Structure, and Origin of the Sympathetic. Its Re- 

 lation with the Pneumogastric. Its Connection with the Spinal System. Its Plexuses. Its 



