PersoiKit and Scientijic jSfewH. 145 
north than from the luountains on the southeast. Two prob- 
lems are presented by the plienoniena — (1) the sequence of 
glacial iidvance and retreat and the extent and duration of 
climatic changes indicated by the presence of lignites: (2) 
the bearing of the peculiar conditions of glacial development 
upon the physiograph}^ of the sound. Either the deeper val- 
leys of the sound have been eroded during a period of high 
level from the once more extensive sheets of drift or, as sug- 
gested by Russell, the channels represent the beds repeatedly 
occupied b}'^ glaciers, which in their advance and retreat built 
up the pluteau-like eminences of the region, probably upon 
the pre-existing topography. The past condition of Puget 
sound under contluent glaciation is probnbly now represented 
by the Malaspiiia ghicier and its attendant phenomena. — 
Biiiieii Willis. 
Geological Society of Ajieuica. 
At the recent meeting, which was held at Washington, about 
75 fellows were in attendance, and the Washington geologists 
gave the society a very warm- welcome. Seven new fellows 
were declared elected by the ballot returned, and Prof. Edward 
Orton, of Columbus, O., was elected president. The report of 
the oflicersshowed that the society is flourishing, (inarcially 
and otherwise. Following is tii<^ list of papers presented: 
Joseph Le Conte — The diffcrtnt kinds of earth-crust movements and 
their causes. (President's addiess.) 
J. S. DiLLEK — Crater lake. (.30 minutes.) (Lantern views.) 
J. F. Kemp "The Leucite hills, Wyoming. {1.5 minutes.) (Lantern 
vipwi=!.) 
N. H. Darton — Physiographic development of the District of Colum- 
l)ia region. (.30 minutes.) (Lantern views.) 
N. H. Darton — Dikes in Appalachian Virginia. (10 minutes.) 
Frank Levereit" — On the changes of drainage in thf Ohio river basin. 
(20 minutes.) 
■ C. Willard Hayes — The solution of ijuartz under atmospheric condi- 
tions, (lb minutes.) 
Marius R. CAMPBELL-Erosion at baselevcl. (10 minutes.) 
Marius R. Campbell "The origin of certain topographic forms. (25 
minutes.) 
.J. B. Woor)woRTH— Homology of joint.s and artificial fractures. (10 
minutes.) 
Arthur Kexth — Notes on the structure of the Cranbeiry district in 
North Carolina. (15 minutes.) 
C. H. Hitchcock — Notes on the stratigraphy of certain homogeneous 
rocks. (5 minutes.) 
J. B. WooDwoRTH— Unconformities in Marthas Vineyard and Block 
island. (20 minutes.) 
RoBEirr Bell -Evidences of northeasterly differential rising of the 
land along lioll river. (15 minutes.) 
George E. Ladd Surface tension of water as a cause of geological 
phenomena. 
Erasmus Haworth — Cementing materials of the Tertiary sands and 
gravels of western Kansas. (15 minutes.) 
H. W. TuRNKR — The work of the U. S. Geological Survey in the Sier- 
ra Nevada. 
