REPORT OF THE SECRETARY 128 
Miss Agnes Auth was promoted, at the close of the year, to the 
position of minor library assistant, one of the two new positions 
that were granted to the library by Congress as of July 1, 1926. 
Miss Auth’s former position as messenger was reclassified to that 
of library aid, and was filled by the appointment of Mrs. Mary 
Arnold Baer. 
The vacancy in the position of assistant messenger, occasioned by 
the appointment of Mr. Johni Anderson to a position elsewhere in 
the Institution, was filled by the transfer of Mr. William Helvestine 
from another Government department. 
At different times during the year various persons were employed 
temporarily. Among these were Miss Ellen D. McBryde, Miss Mary 
Martin, Mrs. Victoria B. Turner, Mrs. M. Landon Reed, Mrs. Mada- 
line Amphlett, Miss Helen Turnbull, Mr. William P. Wright, Mr. 
Clarence Gunther, Mr. Walter Jaeger, and Mr. Carl Haardt. 
EXCHANGE OF PUBLICATIONS 
As is well known, the growth of the Smithsonian Library is due 
almost entirely to the exchange of publications between the Institution 
and its branches and other learned institutions and societies through- 
out the world. These publications come to the library direct, or 
through the International Exchange Service, which is administered 
by the Institution. During the past year 30,541 packages, of one or 
more publications each, came to the library by mail, and 7,352 
through the exchange. The number of the latter was more than 
three times that of the year before. The special effort to complete 
broken sets, by listing wants and writing follow-up letters, which 
was begun the previous year, was continued with vigor. Exchange 
relations were opened with many new societies. Most of the 1,225 
letters written by the library had to do with the exchange of publica- 
tions. 
MAIN LIBRARY 
The publications sent to the Smithsonian deposit, which is the 
main library of the Institution, numbered 5,088, comprising 3,649 
complete volumes, 843 parts of volumes, 175 pamphlets, and 421 
charts. Documents of foreign governments, more or less statistical 
in character, to the number of 7,305, were also sent, without being 
stamped or entered, to the Document Division of the Library of 
Congress. 
Many dissertations were received from the universities of Basel, 
Berlin, Bern, Breslau, Cornell, Erlangen, Giessen, Greifswald, 
Halle, Heidelberg, Johns Hopkins, Kiel, Konigsberg, Liége, Lou- 
vain, Lund, Neuchatel, Pennsylvania, Strassbourg, Utrecht, Vene- 
