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indebted for the larger part of our sugar collections, has 
recently made a number of additional contributions and 
has also replaced with fresh material some specimens 
which had deteriorated with age. There are thirty-two 
specimens, in all, in this donation. We have received 
from Dr. Carlos Manuel Asensi, of Calamo, Brazil, a partial 
set of Brazilian rubbers, together with samples of the raw 
milk and of the implements employed in rubber collecting 
and curing. The last mentioned articles are of special 
interest and value to our museum and we have for years 
past desired that they might be obtained. 
A number of timber products, otherwise difficult and 
expensive to obtain, were donated by various exhibitors at 
the Forestry Exhibition held in Grand Central Palace in 
this City last summer. 
Through the expedition of Dr. J. N. Rose, of the National 
Herbarium, to the west coast of South America, we have 
obtained a number of very rare food products. In addition 
to the samples of foods themselves, Dr. Rose has supplied 
living roots of the plants yielding them, which are now 
growing luxuriantly in our economic plant collection. 
The accumulation of miscellaneous materials has con- 
tinued throughout the year, and, as was the case during 
1913, these have included quite a number of rarities among 
foods and drugs. 
Respectfully submitted, 
H. H. Russy, 
Honorary Curator of the Economic Collections. 
REPORT OF THE HONORARY CURATOR OF MOSSES 
Dr. N. L. Brirron, Directror-1n-Cuier. 
Sir: I was a member of the expedition to Porto Rico 
during February and March and collected mosses and 
hepatics, and such lichens and fungi as were readily found, 
also taking care of the collections of the flowering plants 
while the rest of the party were off exploring Mona and 
Desecheo Islands. The collection of mosses made on the 
