114 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1919. 
the Astrophysical Observatory, and will also take general direc- 
tion of the library and international exchanges, and perform such 
other duties as may be assigned to him. 
On motion, the appointment of Dr. Abbot as assistant secretary 
of the Smithsonian Institution was approved. 
THE SECRETARY’S SUPPLEMENTAL REPORT. 
The secretary made the following statement of results which have 
been accomplished in the various activities of the institution since 
the preparation of his annual report: 
UNITED STATES NATIONAL MUSEUM. 
Additions to collections —The noteworthy additions to the regular 
collections of the Museum since July 1, included: 
A large collection of historical theatrical costumes, presented by 
Mrs. Richard Mansfield, consisting of costumes and accessories worn 
by the late Richard Mansfield. , 
A priceless collection of antillean land mollusks, about 30,000 lots, 
approximately 400,000 specimens, donated by a regent of the institu- 
tion, Mr. John B. Henderson. 
Mineral technology.—tThe collections in this division are being 
assembled with the two fold purpose of arousing a fuller apprecia- 
tion of the public’s indebtedness to mining and metallurgical enter- 
prises and of promoting a readier familiarity with the production 
and uses developed. At the beginning of the year 18 groups were 
on display in the exhibition halls. Besides these exhibits there have 
been issued during the past 18 months, largely as war contributions, 
6 nontechnical pamphlets, as follows: 
Coal Products: An object lesson in resource administration. 
Fertilizers: An interpretation of the situation in the United States. 
Sulphur: An example of industrial independence. 
Coal: The resource and its full utilization. 
Power: Its significance and needs. 
Petroleum: A resource interpretation. 
Textiles—The purposes of the Division of Textiles are to show 
the raw materials used in the textile arts and the development and 
use of these from the technical standpoint. 
Wood technology illustrates the forests, their products, and the 
lessons taught by the recent progress in forestry studies. 
The Division of Medicine illustrates the evolution of the healing 
art and the theories of disease; the materials used in medication and 
various methods of preparing and administering the same; the prin- 
ciples of disease prevention and the materials and appliances used 
to this end. 
