CHANGES IN RETINA OF EYES OF AMBLYSTOMA 81 



5. There are no differences in the length or diameter of the 

 outer segments of the rods of light and dark eyes, nor do the 

 rod nuclei change their position. 



6. The rod nuclei, however, do change in form. The angles 

 of the nuclei in the light becoming rounder as if in response to 

 a pull. 



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THE JOURNAL OF KXPERIMENTAL ZOOLOGY, VOL. 23, NO. 1 



