(4°) 
field work in regions not well explored as far as the groups 
of fungi he is investigating are concerned. In the early part 
of the year explorations in Cuba yielded much interesting 
material. Later he attended the symposium of botanists at 
Ohio Pyle, Pennsylvania, during a season especially adapted 
to the development of all kinds of fungi, and during the rest 
of the summer he made large collections along the Potomac 
River in Virginia and the District of Columbia and in cen- 
tral Maine. A special feature of the field work was to secure 
copious and careful notes on the fungi collected. His in- 
vestigations on the Polyporaceae have been continued and 
during the year his thirteenth contribution to the knowledge 
of that group has been reached. Several keys to special 
groups of fungi have been printed in Zorreya, and accounts 
of his explorations in Cuba and Maine have appeared in our 
Journau. A list of fungi collected at Ohio Pyle, Pa., has 
been prepared for a general report, which will be published 
by the secretary of the symposium held there last summer. 
Dr. Murrill also assisted in the courses of lectures conducted 
by the Garden in connection with the nature-study work of 
the public schools of the Borough of the Bronx. 
Mrs. Britton has continued to lend her voluntary aid essen- 
tially in the capacity of an Assistant Curator, in developing 
the collection of mosses. ‘The specimens she has added to 
this part of the herbarium by personal collections in the Ba- 
hama Islands and Bermuda and brought together by means 
of correspondence are all of great value. She has continued 
her studies of North American mosses, prepared manuscript 
for the ‘* North American Flora” and actively prosecuted the 
task of rearranging the moss collection so that it may be used 
more advantageously. Mrs. Britton has published papers in 
the Bryologist and in the Bulletin of the Torrey Botanical 
Club. She has also acted as secretary of the Wild Flower 
Preservation Society of America and supervised the distri- 
bution of the prize essays and posters issued by means of 
the Stokes Fund. 
Professor Underwood has also contributed his time and 
