1910] forrcy: Regeneration of Hydranth and Holdfast. 22] 



differentiation of the physiological mechanism in the region of 

 development. This statemenl may be broadened to include all the 

 phenomena of development, for the fads furnished by Cory- 

 morpha indicate thai regenerative and normal development are 

 but manifestations of the same fundamental property of living 

 organisms, controlled by the same mechanism. 



BerkeL y, Cal. 

 May 26, 1910. 



