171 
Proceedings of the Club. 
Tuespay, Marcu 14, 1893. 
The President in the chair and twenty-six persons present. 
The Editor announced that a paper by Prof. L. M. Under- 
wood, on the Bibliography of Hepaticology, would form part 1 of 
Vol. IV. of the Memorrs, and that Dr. Rusby’s first publications 
upon. Mr. Bang’s Bolivian collections would form the third part 
of Vol. III. 
Dr. Morong exhibited the interesting fruit of a species of the 
Asclepiadaceous genus Exolodus from Paraguay, and remarked 
upon the habits of the plant. 
The following active members were elected: Mr. Theodore 
G. White, Mr. Louis Froelich, Mr. Rudolph Weber, Mr. Steward- 
son Brown, Mr. Joseph D. Crawford. 
The announced papers of the evening were then read as fol- 
lows: “Notes on Cladosporium fulvum, by Miss Effie A. South- 
worth. This fungus is a parasite of the tomato plant, most injur- 
ious in the winter season to hot-house plants, thus being especially 
destructive from an economic point of view. The fungus appar- 
ently grows entirely between the cells, and commonly makes its 
appearance protruding through the stomata. The first appear- 
ance is that of whitish spots on the under sides of the leaves, 
which soon turn yellow, yellow spots at the same time devel- 
oping opposite these upon the upper surface. The Bordeaux 
mixture is especially valuable in treatment. Miss Southworth 
presented a very interesting life history of the plant, well illus- 
trated by blackboard drawing. 
“Some Theories about Osmosis,” by Dr. Emily L. Gregory. 
This paper will be published in a subsequent issue of the But- 
LETIN. 
“Preliminary Notes on the Atlantic Coast Species of Polysi- 
Phonia,” by Mr. Carlton C. Curtiss. 
WeEpneEspay, MARCH 29, 1893. 
Vice President Morong in the chair and twenty-eight persons 
present. 
Dr. D. T. Millspaugh of 89 Hamilton Place, Paterson, N. J., 
and Prof. Elmer E. Sherman of South Orange, N. J., were elected 
active members. 
