Contents. v 
C. Davison, 188. — The Great Valley of California: a Criticism of 
the Theory of Isostasy, P. Leslie Ransome, 189.— The National 
Cyclopedia of American Biography, 190. — Sur un Cristal de Lab- 
rador du Gabbro de Minnesota, N. II. Winchell, 190. 
Recent Publications, 190. 
Correspondence. — An Ally of Daimonelix, Jos. F. James, 193. 
Personal and Scientific News. — Notes, 19.3. — Nansen's Polar Expedition, 
195. — The International Congress of Geologists, 196. 
OCTOBER NUMBER. 
Dinichthys Prentis-Clarki. E. W. Claypole. [Plate 
VII.] 199 
The Fort Union Formation. W. H. Weed 201 
Volcanic Ash from the North Sliore of Lake Superior. N. 
H. WmcHELL and U. S. Grant 211 
Buffalo Meetings of the Geological Society and American 
Association. Warren Upham 213 
The '•Augen'"-Gneisp Area, Pegmatite Veins and Diorite 
Dikes at Bedford, N. Y. L. McI. Luquer and H. 
RiES. [Plates VIII and IX.] 239 
A New and Important Source of Phosphate Rocks in Ten- 
nessee. J. M. Safford 261 
Review of Recent Geological Literature. — Ein Neuentdecktes Vorkom- 
men von Tremadoc Fossilien bei Hof, J. F. Pompeckj, 264.- -Ueber 
die Brachiopodengattung Obolus, Eichw., August Michwitz, 261. 
The Geological Structure of the extra- Australian Artesian Basins, 
A. GiBB Maitland, 265. 
Personal and Scientific News, 265. 
NOVEMBER NUMBER. 
The Arlington Iron — Minnesota No. 2. N. H. Winchell. 
[Plate X.] 267 
The Age of the California Coast Ranges. W. H. Fair- 
banks ... 271 
The Elective System in Engineering Colleges. M. E. 
Wadsworth 282 
Orotaxis: A Method of Geologic Correlation. C. R. 
Keyes 289 
Human Relics in the Drift of Ohio. E. W. CLAYPOLi;. 
[Plate XL] , 302 
Revieu^ of Recent Geological Literature.— Text-Book of Paleontology, 
Karl A. VON Zittel, edited by Charles R. Eastman, 311.- On 
the Vertebral Column, Fins, and Ventral Armoring of Dinichthys, 
Bashford Df.an, 316.— Fifteenth Annual Report of the United 
States Geological Survey, J. W. Powell, .317.— Preliminary Re- 
• port on the Geology of the Common Roads of the United States, 
N. S. Shaler, 318.~ The Potomac Formation, Lester F. Ward, 
