Contents. v 
OCTOBER NUMBER. 
Nanno, a New Cephalopodan Type. J. M. Clarke. 
[Plate VI.] 205 
The Relation between Baseleveling and Organic Evo- 
lution. J. B. Woodworth 209 
Tertiary and Early Quaternary Baseleveling in Minne- 
sota, Manitoba, and Northwestward. Warren 
Upham 235 
Interruption during the Deposition of the Burlington 
Limestones. Francis M. Fultz. [Illustrated]. . 246 
Review of Recent Geological Literature. — Lower Silurian Lamellibran- 
chiata of Minnesota, E. O. Ulrich, 249. — Iron-bsaring rocks of the 
Mesabi Range in Minnesota, J. Edward Spurr, 251. — Nickel ores 
of Sudbury, Canada, John D. Frossard, 252. — Mining Royalties, 
their practical operation and effect, Chas. A. James, 252. — Origin 
of certain Novaculites andQuartzites, Frank Rutley, 253. — Willy- 
amite — a new mineral from Broken Hill, E. F. Pittman, 253. — Pa- 
pers and Notes on the Glacial Geology of Great Britain and Ire- 
land, Henry Carvill Lewis (edited by H. W. Crosskey), 253. — 
Mineral Resources of the United States, 181)3, David T. Day, 25L 
Recent Publications, 254. 
Correspondence. — Note on the Geological Map of the State of New 
York, Jules Marcou, 257. — Sixth Session of the International 
Congress of Geologists, Persifor Frazer, 259. 
Personal and Scientific News. — British Association for the Advance- 
ment of Science', 271. — Manual of the Geology of India, 272. — Arc- 
tic Expeditions from the United States, 272. 
NOVEMBER NUMBER. 
The Limit of Postglacial Submergence in the High- 
lands east of Georgian bay. F. B. Taylor. [Plate 
VIL] 273 
A Review of the History of the Great Lakes. J. W. 
Spencer. [Plate VIII.] ... 289 
Drainage Systems of the Carboniferous Area of Mich- 
igan. E. H. Mudge 301 
The Mineralogical Characters of certain New Jersey 
limestones. Lewis G. Westgate 308 
The Ventral Armor of Dinichthys. Albert A. 
Wright. [Plate IX.] 313 
Preliminary Notice of a new species of Temnocyon and 
a new genus from the John Day Miocene of Ore- 
gon. John Eyerman 320 
Editorial Comment. — The Origin of Spheroidal Basalt, 321. March 
Weather on the Greenland Ice-sheet. 326. National Representa- 
tion in the International Congress of ( Jeologists, 327. — Mountain 
Systems of Asia and Europe, 328. 
Review of Recent geological Literature.— Mesozoic Echinodermata of 
the United States, W. B. Clark, 329.— Insect Fauna of the Rhode 
Island Coal Field, S. H. Sc odder, 'X',0.- Catalogue and Bibliogra- 
