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CoNTRIBUTIONS 
No. 186. Notes on Trichomanes—I. The Identity of 
Trichomanes pyxidiferum L., by Margaret Slosson. 
No. 187. Notes on Plants of the Southern United 
States—I, by Francis W. Pennell. 
No. 188. Notes on Species of Halymenia, by F. S. 
Collins and M. A. Howe. 
No. 189. Peruvian Mosses, by R. S. Williams. 
No. 190. Phytogeographical Notes on the Rocky Moun- 
tain Region.—VI. Distribution of the Subalpine Plants, 
by P. A. Rydberg. 
No. 191. Notes on Plants of the Southern United 
States—II, by Francis W. Pennell. 
No. 192. Studies of West Indian Plants—VIII, by 
Nathaniel Lord Britton. 
Lectures 
Pusiic LECTURES 
Illustrated public lectures on botanical and horticultural 
subjects have been given in the museum building on Satur- 
day afternoons from April to the middle of November, as 
outlined below. The total attendance for the year has 
been 3,327, averaging 104 for each of the 32 lectures; the 
maximum attendance being 205 on May 13. The first 
ten lectures of this course were devoted to horticulture, 
with an average attendance of 113. 
April 8. “The Outlook in Horticulture,” by Professor 
L. H. Bailey. 
April 15. “‘How the Landscape Gardener Uses Plants,” 
by Professor F. A. Waugh. 
April 22. “‘The Gladiolus,” by Hon. Arthur Cowee. 
April 29. “‘ Perennials,” by Mr. Maurice Fuld. 
May 6. “Rock Gardens,” by Mr. Richard Rothe. 
May 13. ‘‘Irises for American Gardens,” by Mr. Arthur 
Herrington. 
May 20. “Valuable Plants Introduced from China,” by 
Mr. Frank N. Meyer. 
