IV Contents. 
On the genus Ampj'x, with descriptions of American species. 
[Illustrated.] A. W. Vogdes 99 
Editonal Comment. — The Illinois State Museum, 109. Some Recent 
Criticism, 110. 
Review of Recent Oeological Literature. — Final geological report of the 
artesian and underground investigation between the ninety-seventh 
meridian of longitude and the foothills of the Rocky Mountains, 
Robert Hay, 113. — The second volume of the final report of the 
second geological survey of Pennsylvania, J. P. Lesley, 117. — Sur 
la presence de fossiles dans le terrain azoique de Bretagne, 
Charles Barrois, 118. — The Champlain submergence, Warren 
Upham, 119. — Note on the Middleton formation of Tennessee, 
Mississippi and Alabama, Jas. M. Safford, 119. — Phylogeny of the 
Ungulates, Mme. Pavlow, 119.— On a series of peculiar schists 
near Salida, Colorado, Whitman Cross, 130. — Palceaster eucharis 
Hall, A. H. Cole, 120.— Grahamite in Texas, E. T. Dumble, 130. 
Correspondence. — Some of Prof. Salisbury's criticisms on "Man and the 
Glacial Period," Geo. F. Wright, 131. — A new locality for miller- 
ite, Chas. R. Keyes, 126.— Topographical work of the United 
States Geological Survey, Henry Gannett, 127. — Mr. Tafif's reply 
to Prof. Hill, J. A. Taff, 128. 
Personal and Scientific News. - The Geological Society of America; the 
late meeting at Ottawa, 130. 
MARCH NUMBER. 
A Classification of the Brachiopoda. Charles Schuchert. 
[Plate v.] 141 
A New Coccostean-Coccosteus Cu3'ahogae. E. W. Clay- 
pole. [Illustrated. ] 167 
Pleistocene papers read at the Ottawa meeting of the Geo- 
logical Society of America 171 
Man and the Glacial Period. 
Antiquity of Man in Eastern North America, N. S. Shaler. 180 
Older Drift in the Delaware Valley, A. A. Wright 184 
Supposed Glacial man in southwestern Ohio, Frank 
Leverett 186 
Man and the Glacial Period, Warren Upham 189 
Preglacial man not improbable, E. W. Claypole 191 
Professor Wright's book a service to Science, N. H. WiN- 
CHELL 194 
A single glacial epoch in New England, C. H. Hitchcock. . 194 
What was the origin of Post-Glacial Man? F. W. Putnam.. 195 
Additional evidence bearing upon the glacial history of the 
upper Ohio valley, G. F. Wright 195 
The Cincinnati Ice dam, Jos. F. James 199 
The Cause of an Ice age, J. F. Blake 202 
Review of Recent Oeological Literature. — Annals of British Geology, J. 
F. Blake, 203. — Geological Survey of Missouri, Report on Iron 
Ores, Frank L. Nason, and on Mineral Waters, Paul Schweitzer, 
305, — The Metaspermie of the Minnesota Valley. Conway' Mac- 
MiLLAN, 207. — Distribution of Stone Implements in the Tidewater 
Country, W. H. Holmes, 208.— Note on Quartz-bearing Gabbro in 
Maryland, U. S. Grant, 209. — Brown coal and Lignite of Texas, 
E. T. Dumble, 209. 
Correspondence. — The Glacial Geology of Martha's Vineyard, John 
Bryson, 310.— Remarks on a part of the review of the Third 
Texas Report, Jules Marcou, 213. — Relation of the attenuated 
