154 Journal of the Mitchell Society [. December 
Penck, Professor Chamberlain, President Van Hise, Professor 
Stevenson, Professor Fairchild, Dr. W. B. Clark, and others. 
Dr. Gilbert spoke feelingly of his life spent in geology. Dr. G. 
O. Smith told of the work of the federal survey, and Dr. Brock 
spoke in behalf of the Canadian Survey. 
Seventy two papers were listed on the programme, of which 
about three-fourths were read. They were arranged in the follow- 
ing groups: Physical and Structual, Glacial, Stratigraphic, Areal, 
Paleontologic, Petrologic, Physiographic, Cartographic, Economic. 
By invitation of the council Professor Penck delivered a lecture 
on interglacial epochs Wednesday morning. This great geog- 
raper and glacial geologist in the brief time at his disposal 
summed up the evidence, as exhibited in the Alps and in North 
America, bearing upon the lapses of time between the different 
ice invasions. 
“Some Distinctions between Marine and Terrestial Conglomer- 
ates”, by Joseph Barrell, followed the same line which this author 
has pursued for some years, and showed his usual painstaking 
research. Professor Chamberlain’s paper, “Diastrophism of the 
Ultimate Basis of Correlation”, was appreciated by all. The sen- 
sation of the meeting came when Frank B. Taylor in his paper, 
“The Bearing of the Tertiary Mountain Belt upon the Origin of 
the Earth's Plan”, suggested the possibility of the earth having 
captured the moon in late geological time, thus accounting for the 
earth’s polar shortening. The papers by Fairchild on the reces- 
sion of the ice in New York, elicited much comment from Brigham 
and others, and it seemed difficult for the glaciologist to agree 
upon details. Dr. W. B. Clark spoke of the results of the invisti- 
gation of the coastal plain formations along the Atlantic coast. 
Of interest to North Carolinians were the papers by E. W. Berry 
on “The Geologic Relations of the Cretaceous Floras of Virginia 
and North Carolina”, and by S. L. Miller on “Erosion Intervals 
in the Tertiary of North Carolina and Their Bearing upon the 
Distribution of the Formations”. Dr. E. O. Hovey displayed 
some very fine views of Mont Pele and the Soufri&re taken last 
summer, and pointed out recent changes in the two volcanoes. 
The paper most eagerly awaited by stratigraphers and general 
geologists entitled, “Revision of the Paleozoic Systems in North 
