CHAPTER VII 



SENSATION 



ADJUSTMENT is a process, not of creating the 

 conditions of consciousness, but of getting a 

 content for it. The original cell has all the 

 responsiveness of any cell, but this capacity 

 cannot be made effective until a structure has 

 been developed that conveys to it some indica- 

 tions of the external world. The first struggle, 

 however, is not for experience, but for con- 

 sciousness. If consciousness coincides with 

 katabolic changes, and two centres of activity 

 are necessary for its continuity, certain ele- 

 mentary relations must be worked out before 

 sensations can be received and interpreted. 

 The tendency for cells to subdivide starts a 

 development in the envelope, and causes the 

 growth of structure to be bilateral. This pre- 

 adjustment stage of development can be meas- 

 ured subjectively by consciousness, pleasure, 

 and memory; and objectively in rhythm, mo- 



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