JANUARY, 1S9S . 
THE 
VOL. XVii, No. 1. 
i 
AMERICAN 
GEOLOGIST 
A MONTHLY JOURNAL OF 
GEOLOGY AID ALLIED SCIENCES 
EDITORS AND PROPRIETORS, 
Charles E. Beecher, New Haven , Conn. 
Samuel Calvin, Iowa City , Iowa. 
John M, Clarke, Albany , N. Y. 
Edward W. Claypole, Akron , OMo. Persifor Frazer, Philadelphia , Pa. 
Francis W. Cragin, Colorado Springs , CWo. Edward O. Ulrich, Newport , Ey. 
John Eyerman, Easton , Pa. Warren Upham, £f. PcmZ, Jh'mi. 
Marshman E. Wadsworth, Houghton , Mc/i. 
Israel C. White, Morgantown , IF. Fa. 
Newton H. Winchell, Minneapolis , ifmn. 
single Numbers, 35 Cents. 
Yearly Subscriptions, $3.50 
GONTRNTS: 
Page 
James Dwight Dana, Charles E. Beecher. 
[Portrait.]. 1 
Physical Conditions of the Flow of Gla¬ 
ciers, Warren TJpham. [Plate II.]_ 16 
Floating Sand: An Unusual Mode of River 
Transportation, Frederic W. Simonds. 29 
Ancient River Deposits of the Spring Riv- 
v er Valley in Kansas, Oscar IT. Hershey. 37 
The Timepiece of Geology, E. W. Claypole. 40 
Editorial Comment. 
Shell-bearing Modified Drift in Great Brit¬ 
ain, 45. 
Review of Recent Geological Literature. 
Niagara Falls and their History, O. K. 
Gilbert, 47.—Undersokningar ofver Zonen 
med Agnostus laevigatus i Vestergotland, 
I. D. Wallerius , 49.—Iowa Geological 
Survey, Third Annual Report, Samuel 
Calvin , State Geologist, 51.—Fossil Spon¬ 
ges of the Flint Nodules in the Lower Cre- 
Page 
taceous of Texas, J. A. Merrill , 52.— 
Crystallography: A Treatise on the Mor¬ 
phology of Crystals, N. Story-Maskelyne, 
53. —Einige Beitrage zur Kenntniss der 
bohmischen Kreideformation, J. J. John, 
54. —Dictionary of Altitudes of Missouri, 
C. F. Marbut, 54’—Om Olandska Rankar, 
J. G. Andersson , 55.—Silurisk Posidono- 
myaskiffer, en egendomlig utbildning af 
Sk&nes Ofversilur, J. C. Moberg, 55.— 
New Contributions to the Knowledge of 
the Swedish Halleflintas, Otto Nordens- 
kjold, 56. 
Recent Publications . 56 
Correspondence. 
A Question of Priority, IF. B. Scott , 58. 
Personal and Scientific News. 
General notes, 59.—National Geographic 
Society, 59.—Zittel’s Elements of Palaeon¬ 
tology, 60.—Underground Temperatures, 
60.—New York Academy of Sciences, 61. 
THE GEOLOGICAL PUBLISHING COMPANY, MINNEAPOLIS. 
Entered at the Minneapolis Post-office as second-class matter. 
