166 PHOTIC SENSITIVITY OF CIONA INTESTINALIS 



dictions were made. The actual experiments verified these predic- 

 tions exactly. 



9. The results obtained with regularly repeated stimulation not 

 only fail to show any basis for a learning process or for the pres- 

 ence of a "higher behavior," but follow the requirements of the 

 photochemical system suggested before. 



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