\i Contents. 
R. P. Whitfield, 811. Ammoniten-Brut mit Aptychen in der 
Wohnkammor von Oppelia steraspis Oppel sp., R. Michael, 312. 
Revision of tho Fauna of the Guelph Formation of Ontario, J. 
F. Whiteaves, .312.- -Systematic List of Fossils of the Hudson 
River Formation at Stony Mountain, Manitoba, J. F. Whiteaves, 
312. — Fauna fosil de la Sierra de Catorce San Luis Potosi, J. G. 
Aguilera, 313. — Bureau of Mines of Ontario, Fourth Report, 1894, 
Archibald Blue, Director, 31.3. — Scientific results of the New Si- 
berian Islands Exp?dition, The Fossil Ice Strata and their rela- 
tions to the Mammoth remains, E. v. Toll, ,31i. — Further Obser- 
vations upon the Occurrence of Diamonds in Meteorites, O. W. 
Huntington, 316. — The Erosive Action of Ice, G. E. Culver, 31G, 
-The Duration of Niagara Falls and the History of the Great 
Lakes, J. W. Spencer, 316. — Critical Periods in the History of the 
Earth, Joseph LeConte, 317. — Ueber einige Fischreste des nord- 
deutschen undbohmischen Devons, A. von Roenen, 318. — Sur une 
Faune du sommet de la serie rhenane, a Pepinster. Goe et Tilff. 
E. Kayser, 318.— The Stone Industrv in 1891. W. C Day, 318. 
Mineral Products of the United Stales, 1885 to 1891, D. T. Day. 
319. — Opinions concerning the Age of the Sioux Quartzite, C. R. 
Keyes, 319. — Ueber postarchEelsclaen Granit von Sulitelma in Nor 
wegen und ilber das Vorkommen von s. g. Corrosionquarz inGnei 
sen und Graniten, Otto Nordenskjold, 320. 
Recent Publications, 321. 
Cnrrespondence. — The Source of the Mississippi, N. H.Winchell, .323. 
-Warm Temperate Vegetation near Glaciers, Warren Upham. 
.326. 
Personal and Scientific Neivs, 327. 
DECEMBER NUMBER. 
Comparative Taxonomy of the Rocks of the Lake Supe- 
rior Region. N. H. Winchell 332 
River Valle3rs of the Ozark Plateau. Oscar H. Hershey. 33(S 
A Stud}^ of the Belvidere Beds. F. W. Cragin 357 
'Editorial Comment. — The Heim-Capellini Incident in the International 
Geological Congress at Zurich, Persifor Frazer, .386. 
h'eriew of Recent Geological Literature. — Geology of the Green Moun- 
tains in Massachusetts, R. Pumpelly, J. E. Wolff and T. N. 
Dale, 386. -Handbook and Catalogue of the Meteorite Collection, 
O. C. Farrington, 388. — Das obere Mittledevon im Rheinischen 
Gebirge, E. Holzapfel, 389. — Mollusca and Crustacea of the Mi- 
ocene Formations of New Jersey, R. P. Whitfield, 391. — A Geo- 
logical Reconnoissance in Northwest Wycjining, G. H. Eldridge. 
392.— Elementary Physical Geography, R. S'. Tarr, 392.— The 
Lakes of North America, a reading lesson for students of Geogra- 
phy and Geology, I. C. Russell, 393. — Characteristics of the Ozark 
Mountains, C. R. Keyes, 393. 
Recent Pnblications, 393. 
('orref<m>ndence. — Dr. Hoist on the Continuity of the Glacial Period, G. 
Frederick Wright, 396. 
I^ei-snnal and Scientific A^e»'.s. -General notes, 400. Greenland Ici' 
fields, 401. — Geological Svirvey of Canada. 401. -Wisconsin Acad 
emy of Science, Arts and Letters, 401. Field Work of the U. S- 
Geological Survey, 402. — Geological Survey of New York, 403. 
[iid:>.r to Volume XVI, 405. 
