habenuL-e 
into 
the 
ection beU 
veen 
two 
s bundle represents 
me part of the sub- 
1889.] Proceedings of Scientific Societies. 935 
The epiphysis is the remains of an eye which is not vesicular, and can 
therefore be derived from the crustacean eye. The substantia nigra, as 
pointed out in a previous paper, represents the remains of the stomato- 
gastric gangba which are found on the oesophageal commissure. In 
the ganglion habenulse the author sees the remains of a very prominent 
part of the supra-oesophageal ganglion. The taenia thalami, "which 
form a system of fibres passing from the ganglic 
cerebral hemispheres, represent the original cor 
parts of the supra-oesophageal ganglion. Meynei 
the connection between the middle segment and 
oesophageal- ganglion, probably the ganglion interpedunculare." 
Finally, this theory explains the formation of the cerebral ^ 
in the embryo. — L. G. 
AMERICAN ASSOCIATION FOR THE ADVANCE- 
MENT OF SCIENCE. 
Some physiological traits of the solid-stemmed grasses, and espe- 
cially of Indian Corn (maize).— 30 min.— By F. L. Stewart. 
On the genus Eleocharis in America. — 10 min. — By N. L. Britton. 
On the tropical distribution of certain sedges.— 15 min.— By N. L. 
Britton. 
Alimentary apparatus of the Honey Bee.— 13 min.— By A. J. Cook. 
A suggestion concerning scientific work. — 15 min. — By Wm. A. 
Dudley. 
A newly-imported Elm insect. — 15 min. — By L. O. Howard. 
Notes on seedlings of Elymus virginicus.— 5 min.— By W. J. Bsal. 
Notes on Bird's-eye Maple.— 15 min.— By W. J. Beal. 
On the assumption of floral characters by axial growths in Andro- 
meda catesb^ei. — 5 min. — By Thomas Meehan. 
On the significance of dioecism as illustrated by Pycnanthemum.— 
10 min.— By Thomas Meehan. 
On the higher division of the Pelecypoda.— 40 min.— By W.H. Dall. 
On the flora of New Jersey.— 20 min.— By N. L. Britton. 
The House-fly : Hgematobia cornicula Will.— 10 min.— By John B. 
Reserve food substances in twigs.— 10 min.— By Byron D. Halsted. 
Notes upon stamens of Solanace?e.— 7 min. — By Byron D. Halsted. 
