Pennsylvania for Sessions 1899-1900. XXXV 
garden, including seedlings of Dione@a, recently germinated in 
the greenhouses. 
Dr. Harshberger exhibited a remarkably fine growth of a 
Myxomycete—probably Fuldigo, which was feeding abundantly 
on a large growth of Pleurotus Sapidus. 
Dr. Miller then gave his concluding instalment of “ Botani- 
cal Notes from France and Germany.’’ The botanical features 
of his journey from Berlin to Charlottenburg and the Hartz 
Mountains, the Alpine Botanic Garden, and the Botanic Gar- 
den at Hamburg were successively described. 
The following new members were elected: Mr. Robert 
Buist as honorary life member. To general membership: 
Miss H. F. Bartlett, Miss M. F. Bolton, Miss E. S. Carter, 
Miss C. Cavin, Dr. John W. Eckfeldt, Miss B. Felter, Miss A. 
H. Graff, Miss M. J. Kneeshaw, Professor O. P. Phillips, Mrs. 
W. T. Slocomb, Dr. C. H. Thomas, Mrs. C. H. Thomas. 
November 16. The President in the chair. Dr. A. F. K. 
Krout communicated “Preliminary Notes on the Hepatice 
of the Philadelphia Neighborhood.” During the past two 
years he had gathered and identified thirty-one species of the 
group. 
Dr. Macfarlane then made “A Comparison of the Minute 
Structure of Seedling and Adult Plants of Dionga.” Plants 
had been raised by Mr. Goucher from seed. The histology 
of the cotyledons, also of the first and of succeeding foliage 
leaves were compared. The physiological phenomena shown 
by the youngest foliage leaves were found to be identical with 
those of the oldest and largest. 
Exhibitions of living plants were made from the green- 
houses of Mr. Craig and of the University garden. 
December 7—Dr. Miller in the chair. Miss E. Simons 
spoke of “ Ecological Studies at Cornell during the Past 
Summer,” in which she dealt mainly with the excursions taken 
by the Botanical Class. 
