REPORT OF NATIONAL MUSEUM, 1921. vie 
Bureau of Fisheries and of various bureaus of the Department of 
Agriculture were frequent. Doctor Ball, recently appointed curator 
of the Berenice Pahui Bishop Museum, in Honolulu, spent several 
days in the division of mollusks reviewing the collections to ac- 
quaint himself with the methods employed. Mollusks were also 
studied by Dr. G. Dallas Hanna, of the University of California ; 
Dr. Bruce Clark, of the same university; and Hon. Truman H. 
Aldrich, who brought a lot of his material for comparison with that 
in the Museum. The division also had numerous personal calls 
from specialists in the Department of Agriculture, Bureau of Fish- 
eries, and Geological Survey for information or examination of 
collections as an aid in their particular lines of research. The visi- 
tors calling for information on special points at the division of echi- 
noderms were Mr. Wilfrid B. Alexander, of the Western Australian 
Museum, Perth, West Australia; Dr. August F. Foerste, Dayton, 
Ohio; Prof. T. Harvey Johnston, Queensland University, Brisbane; 
Prof. Hiko Matsumoto, Sendai University, Japan; Capt. Frank A. 
Potts, Cambridge, England; and Dr. 8S. Yoshida, Osaka, Japan. Mr. 
Arthur de C. Sowerby, on his way to China to collect for the Museum, 
stopped for several days and visited with the curators and examined 
specimens. Dr. R. W. Shufeldt, Washington City, used the mammal, 
bird, and fish collections considerably in photographing and com- 
paring material. Among the professional botanists from elesewhere 
than Washington who have worked in the herbarium during the year 
are the following: Prof. H. M. Hall and Prof. Frederick E. Clem- 
ents, of the Carnegie Institution of Washington, who were engaged 
in studying Atriplex, Chrysothamnus, and several other critical 
genera; Dr. C. F. Millspaugh, of the Field Museum of Natural 
History, engaged in preparing an account of the flora of Santa 
Catalina Island, Calif.; Dr. P. A. Rydberg of the New York Bo- 
tanical Garden, in connection with studies of Leguminosae and Com- 
positae for the North American Flora; Mr. C. A. Weatherby, of East 
Hartford, Conn., engaged in the study of certain genera of ferns; 
Prof. 8. Mihara, director of the cotton experiment station at Mokpo, 
Chosen, Japan; and Prof. Koyomitsu Ryu, of the College of Agri- 
culture, Morioka, Japan. 
A large number of specimens were asked for as loans by numerous 
outside investigators and institutions as an aid in the study of their 
own material. Mammals were loaned to Dr. J. A. Allen, Mr. H. E. 
Anthony, and Mr. Herbert Lang, of the American Museum of Nat- 
ural History, New York; the University of California, Department of 
Geology; Mr. Arthur de C. Sowerby, London; Dr. Oldfield Thomas, 
British Museum; Dr. G. D. Hanna, California Academy of Sciences; 
Dr. Joseph Grinnell, University of California; Dr. R. W. Shufeldt, 
Washington City. Birds were sent to Witmer Stone, Philadelphia 
