22 ANNUAL REPORT OF THE 
Woodworth conducted the Rocky Mountain Summer Course 
on the Sayles foundation. He also continued the work of the 
Harvard Seismographic Station in connection with the Interna- 
tional Seismological Commission. Mr. G. M. Flint performed 
most of the usual routine work of the instrument room, fixing the 
records etc., except for Sundays and holidays when Professor 
Woodworth did the work. During July and August, 1914, in the 
absence of Mr. Flint the seismograph was kept running by Mr. 
Sydney Holmes, the janitor of the Geological Museum. Reports 
are in preparation by Professor Woodworth, on geological field- 
work done in connection with the N. Y. Geological Survey, and 
on hours at which earthquakes occur. At the close of the Summer 
School in Montana in August, 1914, Professor Woodworth went 
in the interests of the School to Butte and thence southward to 
Salt Lake City to look over the ground for a possibly better field 
for the instruction in aquamic and structural geology. He re- 
turned with the conviction that the present route of the travelling 
Summer School from Bozeman out and back — via the West 
Gallatin Cafion to Squaw Creek (cafion), thence by Spanish Creek 
to Cherry Creek and so by Pole Creek to the Madison River, 
through Norris to Eunis, thence to Virginia City and the Ruby 
Dredges; returning via the Axolotl Lakes and Old Baldy Mt. to 
Varney on the Madison River, with a side trip to the Ruby River, 
Bear Creek and the Sphynx Mt. overthrust, returning thence to 
Eunis,— affords the greatest opportunity for study of geological 
structure and rock types with the most suitable environment for 
a course composed of graduate and undergraduate students. The 
University is indebted to Mr. Peter Marek of Ruby Creek, Mon- 
tana, for a large section of prismatic limestone donated to the 
Museum. A collection of Cambrian trilobites from Pole Creek 
was also acquired. 
During the second term Professor Atwood gave the following 
courses in Physiography:— Geology A, an introductory course 
completed by 67 students; Geology 6, Physiography of the 
United States, with a class of 16 students. During the year, he 
continued his study of the San Juan Mountains which is being 
conducted under the auspices of the U. S. Geological Survey. He 
was especially fortunate while in the field in discovering evidence 
of glaciation during the Eocene period in the San Juan Mountains 
of Colorado. This is the first definite evidence of a glacial period 
in that epoch of the Earth’s history. Professor Atwood presented 
a report of the discovery before the Geological Society of America, 
