Contents. v 
Preglacial Erosion in the Course of the Niagara Gorge, and 
ITS Relation to Estimates of Post-Glacial Time. Warren 
Upham 235 
Note on Certain Copper Minerals. A. N. Winchell 244 
President McKinley [Plate XXII.] 
Editorial Comment 
Edward Waller Claypole 247 
The origin of Australian Iron ores 248 
The antiquity of the races of mankind 250 
Review of Recent Geological Literature. 
New basis of Geography, /. Q. Redzvay, 254; Paleozoic Faunas 
of northern Arkansas, H. S. Williams, 254; What is an Ech- 
inodern? F. A. Bather, 257; Iowa Geological Survey, vol. xi., 
S. Calvin, 258 ; Structure and relations of Uintacrinus, Frank 
Springer, 258; Coal fields around Tse Chou, China, A''. F. 
Drake, 260. 
Monthly Author's Catalogue of American Geological Lit- 
erature a6i 
Personal and Scientific News. 
Earliest traces of man, 265 ; Geology of the South African Re- 
public, 265 ; American meteorites described, 265 ; Scientific 
meetings at Denver, 265 ; Geological excursion in Colorado, 
266; University of Texas Mineral survey, 267. 
NOVEMBER NUMBER. 
Theodore Greely White. Heinrich Rcis. [Portrait.] 269 
New Zealand in the Ice Age. C. H. Hitchcock. [Plates XXIV- 
XXVI.] 271 
Reef Structures in the Clinton and Niagara strata of west- 
ern New York. Clifton J. Sarle. [Plates XXVII-XXXL] . . 282 
A Schematic Standard for the American Carboniferous. C. 
R. Keycs 4 299 
The Toronto and Scarboro drift series. Warren Upham 306 
Editorial Comment. 
Announcement of the Theory of Evolution 316 
The American Philosophical Society 317 
Review of Recent Geological Literature. 
Geology of the Eastern Choctaw Coal Field, /. A. Taff, and 
G. I. Adams, 318; Geology and water resources of Nez Perce 
