172 Proceedings of the N. Y. Lyceum. 
_ Specimens were received from M. Milbert illustrating 
the geology of the island of St. Pierre Miguelon, near New- 
foundland. 
Dr. Van Rensselaer presented specimens of the marbles 
and of the iron ores of Vermont and Crown point. 
worms. Dr. Dckay offered drawings and descriptions of 
President, Samuel L. Mitchill, M. D. LL. D. &c. 
Ist. Vice President, John Torrey, M. D. 
2d. Vice President, Rev. D. H. Barnes A. M. ° 
Corresponding Sec’y. J. E. Dekay, M. D. 
Recording Sec’y. 4. Halsey, Esq. 
ll, Esq. 
Treasurer, L. Bu 
Mi 
Dr. Dekay, \ Curators. 
l 
r.Van Rensselaer, 
Anniversary Orator, Dr. Van Rensselaer. 
March 3d.—Mr. Barnes reported on specimens of Chi- 
ton, animal and shell, from Peru ; he considers them as two 
new species, and describes them at length under the name 
of Chiton niger and C. Echinatus. 
10th.—A translation was read by Dr. Dekay of a letter 
from Mons. Geoffroi relative to the organization of dia- 
delphous animals, in which he proposes as subjects of en- 
quiry, Ist. To verify at any period of gestation, the exist- 
ence of a feetus in either uterus. 2dly. To ascertain 
whether the ovula is found in the fallopian tube or ovary- 
Sdly. If this product is discovered, to note its characters: 
Is it an egg, i.e. with centre yolk and exterior white, or on- 
ly an ovule 7 
17th.—Mr. Barnes read an Essay on the genus Alasmo- 
donta of Say, and described three new species, A; arcuata ; 
A: mite A: complanata. (Published in No. XIV of this 
