om 
and non-sensitive sides. This study was undertaken to 
ascertain to what extent the anatomical characteristics 
correspond with the physiology. 
6. Stems, Microscopic PREPARATIONS AND DRAwIncGs Illus- 
trating Studies of the Superficial Periderm of the Genus 
Euonymus. Exhibited by Harriet B. Elder (Barnard 
College). 
The woody portions of stems of the different species of 
a genus are quite similar in anatomical characteristics, as 
are also, to a certain extent, the bark portions. The 
genus Euonymus presents a remarkabie exception to this 
rule, as shown by the external appearance of the young 
branches and by sections. 
7. Microscopic PREPARATIONS, DRAWINGS AND WALL CHARTS 
Illustrating a Comparative Study of the Development of 
the Superficial Periderm in the Genus Salix. Exhibited 
by Alexandrina Taylor (Barnard College). 
In most text-books the work of Sanio is taken as author- 
ity on the development of superficial periderm. From 
the large number of species of the genus Salix he se- 
lected one as a type. The many variations from this type 
pointed to the possibility that by extending the study over 
a greater number of species than those studied by Sanio, 
one might be found which might more justly be called 
the type of the genus. This was the object of the study 
here illustrated. 
8. Microscopic PREPARATIONS AND DRraAwincs Illustrating a 
Study of the Epidermal Cells of the Leaf of Euonymus 
Japonicus. Exhibited by Jane M. Atwater (Barnard 
College). 
The connection of protoplasm of cells of the endosperm 
of certain seeds is considered a well-established fact, and 
many botanists claim that the majority of living cells are 
thus connected. The pores on the side walls of the epi- 
dermis of this leaf suggested the probability of such pro- 
toplasmic connection. 
