(152) 
Mrs. N. L. Britton voluntarily directed the development of 
the moss collections, devoting much time to the naming and 
conserving of the large accumulation of specimens and to 
collecting in Jamaica. She has also prepared several mono- 
graphs for a forthcoming part of ‘*‘ North American Flora.” 
Dr. J. A. Shafer, Museum Custodian, has been occupied 
in the preparation and care of the permanent collections, and 
the care of the museum building; he has also studied the 
plants he collected a few years ago on Montserrat, West 
Indies, and has prosecuted studies on the North American 
tree-flora, and made special collections for the exhibit of 
North American Dendrology. 
The writer, in addition to the details involved in curatorial 
duties, devoted time to monographic work on the Alisma- 
ceae, Malpighiaceae and several minor groups for ‘* North 
American Flora.” I have also made much progress in my 
studies of the flora of the southeastern United States, particu- 
larly as relates to the native and exotic flora of Florida, and 
the relation of the flora of the Florida Keys, the Everglade 
Keys and West Indies. 
The curators have been assisted by eight museum aids and 
by five janitors. 
Respectfully submitted, 
. MALL, 
flead Curator of the Museums and Herbarium. 
