16 MISSOURI BOTANICAL GARDEN BULLETIN 
There have been even fewer opportunities than in former 
years during the war to purchase books which will complete 
sets in old serials lacking one or more volumes. 
Reclassification of Books.—Work has been continued dur- 
ing the year in making changes in the card catalogue and 
in accession slips in the vault, which were made necessary 
by reclassification in 1915 of the books and pamphlets in 
the sections of plant physiology and plant pathology, but 
this work is not yet completed. About 1,000 more subject 
cards were prepared during the year to complete the entries 
in the library section of mycology for the subject card index. 
Publications.—The current volume of the ANNALS OF 
THE Missourt BoranicaL GaRDEN, which is our principal 
exchange for publications of scientific institutions and socie- 
ties, contains 368 pages, 22 plates and 74 text figures, and 
consists of the results of botanical researches by individuals 
connected with the Garden. It is computed that the value 
er year of exchanges received for the ANNALS is about 
$1,500. Some exchanges are also received for the BULLETIN. 
Both the Annas and the Butiertn are supplied to regular 
subscribers, and separates of the various articles in the 
ANNALS are for sale by the library. The cash receipts from 
subscriptions and separates for the year were $502.85. 
Loans of Books.—While the library is not a circulating 
library, it does loan many books which are needed by in- 
vestigators in other institutions. The borrower makes ap- 
plication for the loan through the library of his home 
university, which is responsible for return of the book at 
expiration of the loan and payment of transportation both 
ways. Loans of 80 books to 29 institutions have been made 
during the year. 
Subject Index.—Work on the subject index of titles of 
botanical articles published by scientific societies of the world 
was continued during the greater part of the year. Indexing 
the serial publications of Great Britain and Ireland and 
nearly half of those of Germany and Austria had been com- 
leted by the end of 1916. During the present year cards 
ave been prepared for botanical articles of nearly all the 
remaining scientific societies of Germany and Austria, but 
most of the cards of the present year have not yet been 
classified by the librarian. In all, about 18,300 articles are 
now indexed for 179 sets of publications. 
Statistical—_There have been 499 volumes, valued at 
$940.55, and 697 pamphlets, valued at $149.00, donated to 
the library; and 337 volumes, valued at $957.94, and 18 
pamphlets, valued at $19.39, purchased. The library now 
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