REPORT OF NATIONAL MUSEUM, 1910. 45 
transfer of the mollusk cases from the middle of the bird hall has 
greatly relieved the congestion there, and made it possible to so 
arrange the cases containing bird groups as to much improve the 
appearance and condition of the hall. 
The space allotted for the exhibition collections of biology in the 
new building comprises most of the western side of the building, 
including the main and second stories of the western wing and 
range and the second story of the northwest range. A complete 
provisional arrangement of the various exhibits, even to the indi- 
vidual cases, has been worked out, but it is subject to more or less 
change. Its immediate importance is as a basis for the construction 
of furniture. To temporarily meet the needs of installation, how- 
ever, many old cases were taken from storage, and are being repaired 
as far as necessary. The mounted mammals which had been in stor- 
age were critically examined, and the fish, reptile, and batrachian 
molds and casts were being treated in the same way when the year 
closed. 
Distribution and exchanges.—Specimens were distributed for edu- 
cational purposes or to be added to museum collections as follows: 
Mammals to the Wisconsin School for the Deaf, and to the Museum 
of the City of Portland, Oregon; birds to the Normal School, Wash- 
ington, District of Columbia; fishes from the Albatross explorations 
in the southern and eastern Pacific Ocean, to the Museum of Com- 
parative Zoology, Cambridge, Massachusetts, and fishes and marine 
invertebrates to Muhlenberg College; insects to the British Museum, 
the American Museum of Natural History, the Museum of the Brook- 
lyn Institute of Arts and Sciences, and the University of Utah; mol- 
lusks to the Crane Technical High School, Chicago; marine inverte- 
brates of other groups to the Philadelphia Academy of Natural Sci- 
ences, the University of Iowa, Yale University Museum, and Leland 
Stanford Junior University; and samples of ocean bottom to the 
University of California. 
The number of specimens used in making exchanges was small, the 
largest sendings having been of insects to the extent of 1,281 speci- 
mens, and of plants to the extent of 6,214 specimens. The principal 
recipients of the latter were the New York Botanical Garden, the 
Missouri Botanical Garden, and the University of California. The 
number of specimens of plants received by the Museum on account of 
exchanges was 8,049. 
Specialists not connected with the Museum obtained for study and 
comparison about 10,800 specimens of animals and plants, exclusive 
of marine invertebrates. A part of these transactions were initiated 
by the Museum, in accordance with a long established policy, in order 
to facilitate and hasten the classification of the collections, while in 
