DROSERA ROTUNDIFOLIA. 



[Chap. L 



renpects they do not differ essentially from the oval ones, and in 

 one specimen 1 found every possible transition between the two 

 states. In another specimen there were no long-headed glands. 

 These marginal tentacles lose their irritability earlier than the 



Fio. 3. 

 (Dronern rotundifolin.) 

 J/Ongitudinal section of a gland ; greatly magnified. 



From Dr. Warming. 



others, and, when a stimulus is applied to the centre of the leaf, 

 they are excited into action after the others. When cut-oflT leaves 

 are immersed in water, they alone often become inflected. 



The purple fluid, or granular matter which fills the cells of the 

 glands, ditferH to a certain extent from that within the cells of the 

 pelicels. For, when a leaf is pla<-ed in hot water or in certain 

 acids, the glands become quite white and opaque, whereas the cells 

 of the pedicels are rendered of a bright red, with the exception of 

 those close beneath the glands. These latter cells lose their pale 

 red tint; and the green matter which they, as well as the basal 



