BATCHELDER: REPORT OF SECRETARY & LIBRARIAN. 363 
The library now contains ‘26,300 volumes, 1411 current or other¬ 
wise incomplete volumes, and 13,753 pamphlets. 
New exchanges have been established with the Maryland Geo¬ 
logical Survey, the Chicago Entomological Society, the Soci6t6 Scien- 
tifique de Chevtchenko a Lemberg, and the Tiflis Botanical Garden. 
One exchange has ceased. The Society now exchanges with 438 
institutions and periodicals. 
Eight hundred and eighty-five books have been borrowed by 111 
persons; 536 have been borrowed for use in the building. The 
library has been consulted about 280 times. 
%} 
Four hundred and twenty-one volumes have been bound in 357 
covers. 
The following serials have been indexed: Transactions of the 
Linnaean Society of New York, two volumes; Memoires de la 
Societe des Sciences Naturelles de NeucMtel, four volumes; Pro 
ceedings of the United States National Museum, ten volumes; 
Journal de zoologie, six volumes ; Proceedings of the Boston Society 
of Natural History, twenty-eight volumes. Current volumes of 
serials already indexed, are indexed as received. 
Walker Prizes. 
The subject appointed for competition in 1901 was a monograph 
on any problem connected with or any group belonging to the North 
American fauna or fiora. 
The following awards have been reported by the Committee: a 
prize of sixty dollars for an essay entitled, “ The Cytogeny of 
Podarhe obscura bv Aaron L. Treadwell. 
A prize of fifty dollars for an essay on liriodendron , by Edward 
W. Berry. 
The subjects for competition in 1902 are: — 
1. Nuclear fusions in plants. 
2. The fate of specific areas of the germ of chordates, as deter¬ 
mined by local destruction. 
«/ 
3. The reactions of organisms to solutions, considered from the 
standpoint of the chemical theory of dissociation. 
