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the year as editor of the Torrey Botanical Club, having spec- 
ial charge of its BULLETIN and MEmorrs; he assisted in the 
nature study courses given at the Garden in coédperation with 
the public schools of the city and carried on exploration in 
the lower Bahama Islands. 
Dr. P. A. Rydberg, Curator, has chiefly had charge of 
the general herbarium of flowering plants. He has continued 
his studies on the plants of western North America, particu- 
larly in connection with the preparation of a Flora of the 
Rocky Mountain Region, and studied the genus Atudus in 
the field from New York to North Carolina and Tennessee. 
Fully one half of Dr. Rydberg’s monograph of Rosaceae 
was printed in Volume 22 of ‘* North American Flora,” and 
he has prepared monographs of the Sparganiaceae, Elo- 
deaceae, Hydrocharitaceae, Balsaminaceae and Limnantha- 
ceae for the same work. He also printed two papers in the 
Bulletin of the Torrey Botanical Club. 
Dr. Arthur Hollick, Curator, has had charge mainly of the 
collection of fossil plants. ‘The additional exhibition and 
storage cases entailed a complete rearrangement of all speci- 
mens, both exhibition and study, and the additional room 
made ready access possible to specimens formerly in storage, 
and also made possible the cataloguing of the numerous type 
specimens. In this work Dr. Hollick received the voluntary 
assistance of Mr. Edwin W. Humphreys. During the year 
Dr. Hollick has edited the BuLLetin of the Garden and 
written several papers on paleontological subjects. 
Mr. R. S. Williams, Assistant Curator, spent the first part 
of the year in the exploration of Panama, whence he brought 
back a very valuable collection of herbarium specimens ; 
while not in the field, he has devoted his time principally to 
the development of the collection of lichens and mosses and 
has prepared the manuscript of several genera and oon 
for a forthcoming part of ‘* North American Flora.’ 
r. W. R. Maxon, of the United States National Museum, 
served as an Assistant Curator during December, working on 
the fern collection. 
