
MUSEUM OF COMPARATIVE ZOOLOGY. 15 
REPORT OF THE STURGIS-HOOPER PROFESSOR 
OF GEOLOGY. 
By WI tui1am M. Davis. 
THE usual courses of instruction have been given during the 
past year. The course on the Physiography of the United States, 
open to undergradutes and graduates in the second half of the 
year, has been improved with the aid of Mr. I. Bowman, assistant, 
by the development of a systematic series of laboratory exercises, 
based chiefly on the topographical maps of the United States 
Geological Survey.. The advanced course, primarily for gradu- 
ates and extending through the year, has been conducted as here- 
tofore, each student selecting a special problem and reporting 
upon his work at regular meetings of the class. 
~ During the autumn a share of my time was given to the pub- 
lication of a report on the journey to Turkestan that was under- 
taken two years ago under the direction of Mr. Raphael Pumpelly 
as leader of a Carnegie Institution expedition. A meeting for 
organization of the American Association of American Geogra- 
phers, in preparation for which there was much correspondence, 
was held in Philadelphia Christmas week; this association ap- 
pears to be the only geographical society in the world in which 
membership is limited to persons of some degree of expert 
knowledge and performance. During the period of the mid-year 
examinations, a short course of lectures on physiography was 
given at the Johns Hopkins University in Baltimore. An inter- 
collegiate excursion was organized to visit the glacio-marginal 
channels in the uplands near Syracuse, N. Y., during the April 
recess. 
Special attention has been given during the year to three 
problems, concerning which essays have been or will soon be 
published: the bearing of physiography on Suess’s theories, in 
which certain observations made in the Tian Shan Mountains 
in 1905 were discussed; the problem of fault-block mountains, 
based on a continuation of the work of earlier years and referring 
