Botany and Zoology. 329 
Siberia, one of them reaching Japan, the present home of all that 
survives of the genus. One or two species are known in the 
Wealden, and two others in the Tertiary. One of these, known 
from northern Greenland and from Sachalin, is so near the extant 
species that it may be united with it. In the Jurassic this genus 
was accompanied by four other Taxineous genera, one of which 
(Baiera) was continued into the Cretaceous formation; in the 
Tertiary also by another (Feildenia), recently discovered by Nor- 
denskidld in Spitzbergen. Cordaites carries the Taxineous type 
back to the Carboniferous and the Devonian; so that this group 
of plants contains the most ancient Pheenogams. A. G, 
annuus, by W. H 
e 
ture, should be regarded as foliar (not trichomes), and therefore 
as answering to calyx; but their development is much later than 
that of the corolla.” The paper is a neat one. A. G 
5. Morphology of Vegetable Tissues, by W. H. Girsrest.—A 
paper reprinted from the Journal of the Royal Microscopical So- 
ciety, read Oct. 8, 1879, with two plates, treating the histology of 
the Cambium, in several Dictyledonous trees and shrubs ; summed 
up by the author thus: ; : : 
“It appears that the cambium layer is not a portio 
prosenchymatous cell-groups;.... on the p 
chyma is produced by the rounding off and sometimes by the 
further division of the 
some species,” _ A G 
6. Aroidee Maximiliane, die auf der Reise Sr. Majestat des 
Kaisers Maximilian T, nach Brasilien gesammelten Aronger- 
_ wiichse nach handschrifilichen Aufzeichnungen von H. Schott 
dividing the sieve-plates remain, forming the scalariform septa of 
forty-two plates of new Aroide, and a frontispiece of Aroideous 
