Pennsylvania for Sessions 1899-1900. xxi 
ture and affinities, their cross pollination and capacity to 
produce many fine hybrids, and the structure of fruit and seed 
in relation to germination. He described the finer hybrids 
raised by Crozy and Dreer, and then exhibited a set of new 
hybrids from the Conard & Jones nurseries. 
Professor Macfarlane then spoke on “The Beach Plum, 
Botanically and Economically Considered,” and the paper is 
herewith published. 
Dr. Ferrer, from Mexico, described “‘ Features of the Mex- 
ican Flora.” 
Dr. Macfarlane exhibited and described a fruiting branch 
of the Ginkgo tree laden with the ripe yellow “berries.” He 
stated that the staminate trees in Woodlands Cemetery, and 
the pistillate tree in the Jones Garden, from which the branch 
was taken, flowered simultaneously on May 1, the flowering 
period lasting only for about thirty hours. By hanging 
branches from the former trees on the latter, the abundant 
fruitage now shown had resulted. 
Blooms of several orchids were exhibited by Mr. Le Bou- 
tillier, and a plant of Wepenthes ampullaria was commented 
on by Dr. Macfarlane. 
The society then adjourned to inspect the recently con- 
structed greenhouses adjoining the department, and the pro- 
ceedings terminated with a reception given by the ladies of the 
Auxiliary Committee. 
October 20. Dr. Miller, President, inthe chair. Dr.C. H. 
Shaw gave “Notes of a Recent Trip to Europe.” He 
described the botanical facilities at Munich University, the 
lowland and alpine vegetation of the Tyrol, and contrasted 
these withthe American flora. In the discussion which fol- 
lowed, Dr. Jane V. Myers and Mrs. Mary Williams took part, 
the former advocating the planting in this country, as there, of 
fruit trees along the roadside and field borders. 
Dr. Thomas Githens communicated ‘“‘ Notes on the Flora 
