Pennsylvania for Sessions 1901-1903. xIvii 
duction and Ravages of the Dryrot Fungus (Merulius lacry- 
mans ).”” 
The director of the University Garden exhibited a collec- 
tion of stove and greenhouse plants recently received from 
London. These included several species and hybrids of 
Nepenthes, Philesia and Lapageria, also Philageria, a 
bigeneric hybrid between the two last species. 
November 1. Dr. Miller, President, in the chair. Dr. 
C. H. Shaw described the development of vegetation in 
ponds. His observations were drawn from the region 
around Wood’s Holl, and have since been published in the 
Botanical Gazette. 
Miss Marion Mackenzie then gave “A Synopsis and Com- 
parison of Flowering Records, kept by Mr. Theodore Rand, 
at Radnor, Pa., for twenty years.”” These records showed 
that the seasons 1894 and 1808 were exceptionally early, 
alike in the blooming and leafing of spring plants, while the 
spring of 1883 was the most backward on record. 
Dr. C. H. Shaw described “Alpine and Sub-Alpine Vege- 
tation in Eastern North America.” He stated that while 
the Catskills were only sub-Alpine in their higher flora, the 
Adirondack and White Mountain groups were truly Alpine 
over five hundred to a thousand feet of their higher summits, 
while both groups of mountains showed a striking similar- 
ity in their flora. The Alpines tended to form low, moss- 
like cushions, and their leaves were often small, wiry and 
xerophytic. The modifying factors were strong winds, hot 
suns and snow. 
The chairman then read a report from Miss Cavin of the 
recent excursion of the Society to Haddonfield. 
Dr. Leffmann spoke on the recent acquisition by a com- 
pany of a large area of forest land for the manufacture of 
paper pulp from the wood product. 
November 15. Dr. Miller in the chair. Mr. Cassius H. 
Watson, B. S., read a paper on “The Structure and Rela- 
tions of Chloroplasts,” which is herewith published. 
