82 



CHAS. \V. HAKMTT. 



later curved to the wall and remained in that position during 

 the entire time, xvhile one of the specimens placed lacing the wall 

 later curved toward the light >ide. 



FIGS. .4, It, (.', /) illustrate certain aspects of a specimen which was suspended 

 head downward. At .1 is shown the first indication of change of position; a further 

 change is shown at B; this curvature has reached its limit in that format ('. ;m>l 

 continued thus for several days, oscillating somewhat from side to side, but with 

 no evidence of reaction to light. At D the sickle shape is converted into tin- loose 

 spiral, which likewise continued for some days essentially as shown in diagram; 

 as in the others, there was shifting and change but with no relation to 



