io6 Darwin and Pertz . — Rhythm in Plants . 
June 13, 1900 (J-hour klinostat). Five seedlings: after 
2 i hours all more parallel. 
Thus twenty-one out of twenty-three Phalaris seedlings, 
after from 2 to i\ hours, approached the axis of rotation. This 
can only mean that they were more strongly stimulated when 
pointing obliquely away from the light than when pointing 
obliquely towards it. 
Botanical Laboratory, Cambridge, 
August 2, 1902. 
