1892.1 Noteworthy Anatomical and Physiological Researches. 57 
stance well marked in the different forms of Carex vulgaris, 
hirta, etc. 
It is a little curious to see that the author considers the 
character of hairiness as being so very rare in Carex, and that 
he only mentions this fact for C. zrta, while it is also to be 
foundin C. padlescens, pilosa and many North American species, 
e. g., C.virescens, castanea, aestivalis and triceps. 
But otherwise this paper contains many interesting details 
and proves a skillful and careful research. The first chapter 
gives a general view of the structure of the vegetative organs, 
while the second contains a microscopical analysis of the 
species. 
the lacunes and just under the epidermis. This is the more 
interesting since the Cyperacez formerly like the Graminee 
and the Ranunculaceze were considered exceptional in not 
possessing any reservoirs!! The author has, however, not 
only observed them in the leaf but also in the aerial stem and 
the rhizome of certain species. 
The general structure of the leaf seems to be very uniform, 
there being a whole series of intermediate forms between the 
nearly triangular leaf of C. Davadlliana and the broad and flat 
leaves of C. maxima, riparia and others. ; 
There is also given a very detailed account of the tissues in 
the aerial stem and the rhizome. The aerial shows like the 
leaf a general plan, which is, however, still more distinct than 
jn the leaf. The epidermis does not show so many differ- 
angular in its whole length. 
Among the characters derived from the stem it may be men- 
7 sarees 
Cfr. Sacns: Vorlesungen iiber Pflanzenphysiologie 1887, p. 1a 
