Its Composite' and Dissoluble Nature. 149 



saye one. The intelligence of that one has not been as 

 much restricted by its appointed task. We refer, of 

 course, to that order, or genus of cells which appear as 

 brain and spinal cord, or the nervous system as a whole. 

 While the remote ancestry of the neurons was the same 

 as the muscle, bone, or gland cell, its, differentiation and 

 training has been distinct ; for the neuron has been the 

 cell whose task compelled it to extend its primary quotum 

 of intelligence and develop its lowly wits. 



It is with this wonderful group of cells, the neurons, 

 that we have to deal in the vexed question of human per- 

 sonality (personal identity, self-consciousness, "soul"), 

 and incidentally to inquire whether this human personal- 

 ity is detachable from the organism or not. Whether the 

 human intellect can exist and does exist apart from the 

 human body, after the latter is dead, or not. 



We are not I»ere understood as affirming that the cells 

 of the nervous system are the only cells of the organism 

 concerned in human personality, not even when this group 

 is extended to include the sympathetic system. Every 

 group of cells in the animal body is faintly and in some 

 minor degree apparent in the sub-conscious human intelli- 

 gence. All enter into and contribute to that great sea of 

 feeling which we term the sub-conscious mind. 



Physiologists have even described a sixth sense which 

 they term the muscular sense — the indistinct sensory 

 representation of the vast group of muscle cells in the 



