TABLE OF CONTENTS. xi 



PAGE 



New Centres not formed by aggregation ... ... ... ...112 



Alteration in Vital Power ... ... ... ... ... ... 113 



Increased Action ... ... ... ... ... ... ... 114 



Hypothesis of Vital Force ... ... ... ... ... ... 116 



General Survey of the Phenomena of Living Beings ... ... 118 



IV. OF MIND. 



Of Nerve Action in general ... ... ... ... ... ... 123 



Of the Nerve Current 126 



Different kinds of Nerve Force ... ... ... ... ... 127 



Of the Structure of Nerve Apparatus ... ... ... ... 129 



Of Mental Ntrvoiis Action. 



Of the Mechanism and its Formation ... ... ... ... 130 



Are Mental Nervous Actions of the Nature of Reflex Actions ? ... 133 



The Brain is not a Gland ... ... ... ... ... ... 136 



Of Mind as a Function of the Brain ... ... ... ... ... 136 



Of Mental as compared with Mechanical Action ... ... ... 140. 



Of Thought as a Result of Chemical Action... ... ... ... 142 



Is the Brain to be looked upon as a Voltaic Battery ? ... ... 143 



On Expressing Thoughts ... ... ... ... ... ... 145 



Of the Living Matter concerned in Mental Action. 



Of the Germinal Matter taking part in Mental Operations ... ... 149 



Difference between this and other kinds of Germinal Matter ... 150 



Of the Order in which different kinds of Germinal Matter are 



affected in Disease... ... ... ... ... ... ... 151 



Origin of Germinal Matter ... ... ... ... ... ... 153 



New Powers acquired in Development ... ... ... ... 154 



Effects of Exercise ... ... ... ... ... 155 



Of the Nature of Will, and of the Life of Germinal Matter taking 



part in Mental Operations ... ... ... ... ... 156 



