8 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1926 
National Museum—Continued. 
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RESEARCHES AND EXPLORATIONS 
Field expeditions play an important part in the work of a research 
institution. The Smithsonian, although handicapped particularly 
in this phase of its work by inadequate income, sends out or partici- 
pates in many such expeditions each year. It is often found advan- 
tageous to cooperate in field work with other institutions, thus divid- 
ing the expense and enabling the participating institutions to share 
the collections and other benefits resulting from the expedition. The 
Smithsonian’s explorations cover biology, anthropology, geology, and 
astrophysics, and in addition to furnishing important new facts in 
these sciences, the material brought back by the explorers has done 
much toward building up the collections of the National Museum 
and filling in gaps in the scientific study series. During the past 
year the Institution has engaged in about the usual number of field 
expeditions. These have conducted scientific exploration or field 
work in many States of the United States, Canada, Haiti, several 
regions in South America, Europe, southern Asia, Java, Australia, 
South Africa, and China. Some of these are described in the reports 
of the National Museum and the Bureau of American Ethnology, 
appended hereto, and a few of the others will be mentioned briefly 
here in order to show the character and diversity of the Institution’s 
field work. 
GEOLOGICAL EXPLORATIONS IN 'THE CANADIAN ROCKIES 
Your secretary continued during the 1925 field season his geological 
field work in the Canadian Rockies, starting from Lake Louise Sta- 
tion in Alberta on July 9 with a pack train bearing the camp outfit. 
The season was unusually unfavorable, forest-fire smoke interfering 
with photography and the large number of snow squalls making 
field work extremely difficult. Regarding the progress of the geo- 
logical work, I wrote at the close of the season: 
Only eight camps were made while on the trail. It was more through good 
fortune than favorable conditions that a fine series of fossils from critical 
horizons in the great lower Paleozoic section north of Bow Valley was dis- 
covered and collected. These fossils increase our knowledge of the history and 
life of the Cordilleran Sea of this time and afford the data for comparison with 
