CONTENTS 
JANUARY NUMBER 
James Dwight Dana. C. E. Beecher. [Portrait, Plate I.] 1 
Physical Conditions of the Flow of Glaciers. Warren 
Upham. [Plate II.]. 16 
Floating Sand: An Unusual Mode of River Transpor¬ 
tation. F. W. Simonds . 29 
Ancient River Deposits of the Spring River Valley in 
Kansas. 0. H. Hershey. . 37 
The Timepiece of Geology. E. W. Claypole . 40 
Editorial Comment. —Shell-bearing Modified Drift in Great Britain, 45. 
Review of Recent Geological Literature. —Niagara Falls and their His¬ 
tory, G. K. Gilbert, 47.—Undersokningar ofver Zonen med 
Agnostus laevigatus, I. D. Wallerius, 49.—Iowa Geological Sur¬ 
vey, vol. iv, Samuel Calvin, 51.—Fossil Sponges of the Flint 
Nodules in the Lower Cretaceous of Texas, J. A. Merrill, 52.— 
Crystallography, N. Story-Maskelyne, 53.—Einige Beitrage zur 
Kenntniss der bohmischen Kreideformation, J. J. Jahn, 54.—Dic¬ 
tionary of Altitudes of Missouri, C. F. Marbut, 54.—Om Olandska 
Rankar, J. G. Andersson, 55.—Silurisk Posidonomyaskiffer, J. C. 
Moberg, 55.—New Contributions to the Knowledge of the Swedish 
Halleflintas, Otto Nordenskjold, 56. 
Recent Publications, 56. 
Correspondence. —A Question of Priority, W. B. Scott, 58. 
Personal and Scientific Neivs. —General Notes, 59.—Zittel’s Elements of 
Palaeontology. 60.—Underground temperatures, 60.—New York 
Academy of Sciences, ‘61. 
FEBRUARY NUMBER 
Notes on the Geology of Eastern California. H. W. Fair¬ 
banks. [Plate III.]. 63 
The Association of the Gasteropod Genus Cyclora with 
Phosphate of Lime Deposits. A. M. Miller . 74 
The Buchanan Gravels: An Interglacial Deposit in Buc¬ 
hanan Co., Iowa. Samuel Calvin. [Plates IV and V.] 76 
Lacroix’ Axial Goniometer. N. H. Winchell. [Illus¬ 
trated.].. 79 
Phenomena of Falling Meteorites. O. C. Farrington .. 82 
Philadelphia Meeting of the Geological Society of Amer¬ 
ica. Warren Upham ... 89 
Editorial Comment .—The James Hall Medals, 109.—The Gold Fever in 
South Africa, 110.—Notice Concerning the Geological Map of 
Europe Published under the Auspices of the International Con¬ 
gress of Geologists, 112. 
