1896. ] Anatomical and Physiological Researches. 165 
brophilous character becomes lost by age and that it is not 
acquired until at a certain stage of the development of the 
leaf. 
A peculiar case is mentioned to show how Mimosa pudica 
isableto protect itself against the rain. The leaflets are ombro- 
phobic but escape the effects of the rain by the closing of the 
entire leaf. The leaflets themselves are, however, quite 
easily wetted when separated from each other, and the sensitive- 
ness of this plant seems to be an adaptation for withstanding 
an excessive rain. 
In regard to the ombrophilous foliage, the author confirms 
the observations of Stahl. These leaves show a distinct re- 
which is commonly observed in Java. This seems to be ex- 
plained by the fact, that such leaves are ombrophobic when 
young, but become ombrophilous at a later stage, and then 
begin to raise themselves in a more or less horizontal posi- 
tion.—THEO. HOLM. 
2 E.: Regenfall und Blattgestalt. Ann. du Jardin du Buitenzorg—11: 
13—Vol. XXI.—No. 3. 
