46 The Destiny of Man. 



cerebrum and cerebellum. These organs 

 never receive impressions directly from, 

 the outside world, but only from lower 

 nerve-centres, such as the spinal cord, the 

 medulla, the optic lobes, and other special 

 centres of sensation. The impressions re- 

 ceived by the cerebrum and cerebellum 

 are waves of molecular disturbance sent 

 up along centripetal nerves from the lower 

 centres, and presently drafted off along 

 centrifugal nerves back to the lower cen- 

 tres, thus causing the myriad movements 

 which make up our active life. Now there 

 is no consciousness except when molecu- 

 lar disturbance is generated in the cere- 

 brum and cerebellum faster than it can be 

 drafted off to the lower centres. 5 It is the 

 surplus of molecular disturbance remain- 

 ing in the cerebrum and cerebellum, and 

 reflected back and forth among the cells 

 and fibres of which these highest centres 

 are composed, that affords the physical 

 condition for the manifestation of con- 

 sciousness. Memory, emotion, reason, and 



