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REPORT OF THE HONORARY CURATOR OF THE 
ECONOMIC COLLECTIONS 
Dr. N. L. Brirron, Drrecror-1n-CHIeEr. 
Sir: I have the honor to submit the following report for 
the year IgIl. 
The increase in our collections during the year has been 
small, including only fifty-five specimens, attention having 
been chiefly directed toward the determination of un-named 
specimens already in the Museum. ‘The most noteworthy 
additions are twenty-eight specimens of rare drugs, a set 
of specimens representing the Guayule rubber industry and 
a cet of photographs representing the vanilla industry. 
Considerable progress has been made during the year 
in the classification and determination of our large collec- 
tion of varnish resins, for which the label manuscript will 
soon be completed. 
My own work during the year has centered largely upon 
the determination of a collection of Bolivian plants sent 
by the Commissioner of Agriculture of that Republic. 
Very many of these specimens represent timber woods and 
other economic products and it is hoped that, at a later 
period, we may add such specimens to our Museum 
collections. 
During the latter part of the year, arrangements were 
completed for securing a contribution of a complete exhibit 
of perfumery materials. 
Iam looking forward with interest to the rearrangement 
of some of our cases, which are now overcrowded, when 
the new cases now provided for shall be installed. 
Respectfully submitted, 
H. H. Russy, 
Honorary Curator of the Economic Collections. 
