EEPORT OF NATIONAL MUSEUM, 1925 69 



of South Africa (grasses) ; Prof. Yasutaro Yendo, Uyeda Silk 

 Technical College, Uyeda, Japan (the genus Morus, in connection 

 with silk worni< culture) ; Prof. William S. Cooper, University of 

 Minnesota, Minneapolis, Minn, (coastal flora of California) ; E. E. 

 Watson, Michigan Agricultural College, East Lansing, Mich, 

 (monographic study of the genus Helianthus) ; Prof. L. H. Bailey, 

 Ithaca, N. Y., (flora of Venezuela) ; Prof. Arthur F. Camp, Gaines- 

 ville, Florida (cotton) ; Prof. R. E. Coker, University of North 

 Carolina, Chapel Hill, N. C. (gasteromycetes) ; Dr. M. O. Malte, 

 chief botanist, National Herbarium of Canada, Ottawa, Canada 

 (grasses and ferns) ; Dr. H. A. Gleason, assistant director. New 

 York Botanical Garden, Bronx Park, New York City (flora of 

 northern South America) ; C. C. Deam, Bluft'ton, Ind. (flora of 

 Indiana) ; Ivan M. Johnston, Gray Herbarium, Cambridge, Mass. 

 (flora of northern South America) ; Prof. H. M. Hall, University 

 of California, Berkeley, Calif, (compositae of the western United 

 States) ; Dr. P. A. Rydberg, New York Botanical Garden (legumi- 

 nosae of North America) ; Prof. J. J. Thornber, University of Ari- 

 zona, Tucson, Ariz, (grasses of Arizona) ; Prof. Bruce Fink, Miami 

 University, Oxford, Ohio (lichens of North America) ; Dr. Philip 

 A. Munz, Pomona College, Claremont, Calif, (flora of southern 

 California) ; Prof. B. C. Tharp, University of Texas, Austin, Tex. 

 (flora of Texas) ; Prof. F. J. Crider, director, Boyce Thompson 

 Southwestern Arboretum, Superior, Ariz. (Cactaceae and other 

 plants of the southwestern United States) ; Dr. Arthur Hollick, 

 New York Botanical Garden, and Dr. E. W. Berry, Johns Hopkins 

 University, Baltimore, Md. (in connection with their studies of 

 fossil plants). 



One of the most fruitful forms of cooperation with outside insti- 

 tutions and investigators is the loan of museum material. The 

 wealth of the national collections is such that few comprehensive 

 studies can be carried out without material assistance from its treas- 

 ures. As pointed out before, the National Museum is often greatly 

 benefited by such loans, but the stimulus and aid derived by Ameri- 

 can zoologists and botanists can hardly be overestimated. The ap- 

 pended bibliography, showing the number of articles and memoirs 

 on the collections bears ample testimony to the truth of this asser- 

 tion. The following list indicates briefly the extent of loans during 

 the year. Mammal skins and skulls were loaned to the American 

 Museum of Natural History, New York, for the benefit of H. E. 

 Anthony and Childs Frick; Field Museum of Natural History, 

 Chicago, for W. H. Osgood; Museum of Comparative Zoology, for 

 G. M. Allen; leg and foot of gorilla to Wm. L. Strauss, jr., and 

 a chimpanzee in alcohol to Dr. A. H. Schultz, both of the Carnegie 

 Laboratory of Embryology, Johns Hopkins Medical School. Birds 



