44 REPORT OF NATIONAL MUSEUM, 1906. 
Blackiston among cliff dwellings in the Casas Grandes Valley and in 
Cave Valley, Chihuahua, Mexico. 
The most important exploration in the interest of the Department 
of Biology was conducted by Dr. J. N. Rose, associate curator of 
plants, who, with one assistant, was detailed for about three months 
to continue his botanical investigations in Mexico, in cooperation with 
the National Medical Institute of Mexico and the New York Botanical 
Garden. The States of Mexico, Morelos, Guerrero, Hidalgg, Quere- 
taro, Puebla, and Oaxaca were visited and large collections obtained, 
including many living specimens of cacti. 
Doctor True, head curator of biology, who is studying the fossil 
cetaceans of the Atlantic coast region, coliected at the Calvert Cliffs 
in Maryland, where several hundred specimens, mainly vertebrae, were 
found, and also in the vicinity of Richmond and at Gay Head, Massa- 
chusetts. While in charge of the Museum exhibit at the Lewis and 
Clark Exposition, Doctor Lyon made several trips, chiefly for procuring 
small mammals, to places in the vicinity of Portland, Oregon, to Seaside 
and Mount Hood, and to Mount Rainier, Washington. Mr. William 
Palmer also collected mammals about Portland, and Mr. W. L. Hahn 
was detailed for field work in Indiana. Doctor Stejneger engaged in 
field-work for the Museum while in Europe during the summer of 1905, 
and Doctor Ralph visited the Dismal Swamp, Virginia, and the Adiron- 
dack region in New York, securing both mammals and reptiles. Mr. 
Barton A. Bean accompanied Dr. B. W. Evermann to Florida, where 
he obtained a large number of fishes mainly between Daytona and 
Miami. Miss M. J. Rathbun was detailed to the Woods Hole Station 
of the Bureau of Fisheries for a part of the summer of 1905. 
Dr. A. M. Reese, of Syracuse University, while collecting material 
in Florida for a study of the embryology of the alligator, under a 
grant from the Smithsonian Institution, obtained a number of reptiles 
for the Museum. The important field-work of Doctor Abbott in the 
East Indies, and of Doctor Mearns in Guam and the Philippine Islands 
has already been referred to. 
The branches of the Government through the explorations of which 
the collections in biology were especially enriched are the Bureau of 
Fisheries, and the Bureau of Entomology, the Biological Survey, and 
the Bureau of Plant Industry of the Department of Agriculture. 
The only explorations carried on in connection with the Department 
of Geology were conducted under the joint auspices of the Museum 
and the U. 8S. Geological Survey by Doctor Bassler, who engaged in 
stratigraphic field-work in the southern Appalachians during the early 
part of July, 1905; in western Virginia during August and Septem- 
ber, and in the Mississippi Valley during June, 1906. These investi- 
gations resulted in the acquisition of a large amount of desirable 
material for the Museum collection, 
