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The new Central Display Greenhouse, the gift of Messrs. 
Daniel Guggenheim and Murry Guggenheim, was formally 
opened to the public November 8. Its unique facilities 
were immediately taken advantage of by a short series of 
greenhouse lectures on the three following Saturdays. 
The proper heating of the Museum Building still con- 
tinues an unsolved problem. The increased demands of 
Conservatory Range I at night makes it necessary to shut 
off steam from the Museum after working hours, and on 
cold days it is impossible to bring the temperature of some 
rooms in the Museum to a comfortable temperature. This 
condition has been aggravated by the shortage of coal at 
some periods of the year, and can never be fully remedied 
except by radical changes in the heating system. 
Monthly conferences of the staff and students of the 
Garden have been held as usual on the first Wednesday of 
each month, except during the summer. The Torrey 
Botanical Club has continued to hold one meeting each 
month in the Museum Building. One special meeting of 
the Club in connection with the Wild Flower Preservation 
Society was held at the Mansion. The New York Micro- 
scopical Society held a field meeting at the Garden in 
June. Exhibitions of flowers and plants by the Garden 
and the Horticultural Society of New York, jointly, have 
been held as usual. Of these the last was held in the 
Central Display Greenhouse, which is remarkably well 
adapted to such exhibitions. 
Our three periodicals, the Journal, Mycologia, and 
Addisonia, have appeared regularly, as reported to you 
by other members of the staff. One number of the Bulletin 
has appeared (volume 10, number 37), comprising pages 
I to 87, and containing the annual reports for 1918. Seven 
articles have been reprinted as Contributions, as follows: 
No. 208. Notes on Plants of the Southern United 
States—V., by Francis W. Pennell. 
No. 209. Intersexes in Plantago lanceolata, by A. B. 
Stout. 
