﻿LIVING PLANTS 



newed activity of the petioles occurred, last- 

 ing two to three days, and in four or five 

 days the laminae began to bleach and decay. 



Plants grown in a diffuse hght exhibited 

 features of development in general analogous 

 to those shown in darkness. Elongation of 

 the petioles, and scape, and dwarfing of 

 the spathe especially of the overarching hood 

 occurred. Still more marked, however, was 

 the restriction of the area of the laminae, cor- 

 responding to the intensity of the light. 



In order to determine how far the diversion 

 of food from certain members, and its concen- 

 tration in one might affect its development, 

 recourse was had to the removal of two of 

 the three aerial members of plants grown in a 

 dark chamber. If the leaves were removed no 

 changes resulted in the development of the 

 scape or spathe. The latter organ was 

 dwarfed, although not more than thirty cen- 

 timeters from the stored food in thecorm. If 

 the scape and one leaf were removed from a 

 plant emerging from the bud in a dark cham- 

 ber, the remaining leaf exhibited a develop- 

 ment quite similar to those of entire plants 

 under similar circumstances, except that the 

 petiole reached a length much in excess of 

 those on an entire plant. The laminae were 

 extended in such manner as to cause the dis- 

 appearance of the angles of the leaf-folding in 



