RCH, 1559. VOL. Ill, Ns. 3. 
THE 
AMERICAN 
GEOLOGIST. 
A MONTHLY JOURNAL OP 
GEOLOGY AND ALLIED SCIENCES. 
EDITORS AND PROPRIETORS: 
Prof. Samuel Calvin, University of Iowa, Iowa City, Iowa. 
Prof. Edward W. Claypole, Bucktel College, Akron, O. 
Dr. Persifor Frazer, Franklin Institute, Philadelphia, Penn. 
Dr Lewis E. Hicks, University of Nebraska, Lincoln, Neb. 
Mr. Edward O. Ulrich, Geol. Survey of Illinois, Newport, Ky. 
Dr. Alexander Winchell, University of Michigan, Ann Arbor, Mich. 
Prof. Newton H. Winchell, University of Minnesota, Minneapolis, Minn . 
(lumbers, 35 <5ei}ts. 
Yearly Subscription, $3.50. 
PAGE 
NGLOMERATES enclosed in gneissic 
terranes .—Alexander Winchell . 158 
.TURAL SCIENCE AT THE UNIVERSITY OF 
Minnesota. [Illustrated]. N.H.Win- 
chell . 165 
I LIATION AND SEDIMENTATION. Andrew C. 
; Lawson . 169 
e Newark system. Israel C. Russell... 178 
|t. FoRSTEft on Earthquakes. R. D. 
Salisbury . 182 
|E ORIGINAL LOCALITY OF GRYPH^EA 
pitcheri. Jules Mmcou.. . 188 
ITORIAL Comment. 
! Rejoinder to Dr. Lawson. 193 
Another old Channel of the Niagara 
River . . 195 
VIEW OF RECENT LITERATURE. 
Recherches sur les Poissons Paleozo- Jj 
iques, Lohest, 196.—The iron ores of the \ 
Penokee-Gogebic series of Michigan and 
Wisconsin, Van Hise, 197.—The great 
’ lake basins of the St. Lawrence, Drum¬ 
mond, 198.—Northern Kansas: Its topo¬ 
graphy, geology, climate and resources, 
Hay, 199.—Les mindraux des roches, 
Levy and Lacroix , 199.—Discovery of the 
ventral structure of Taxocrinus and 
Haplocrinus, and consequent modifica¬ 
tion in the classification of the Crin- 
oidea, Wachsmuth and Springer, 200.— 
Crotalocrinus: Its structure and zoologi¬ 
cal position, Wachsmuth and Springer , 
201 . —Preliminary report of the Dakota 
School of IJJines upon the geology and 
mineral resources and mills of the Black 
Hills of Dakota, Carpenter and Hofman, 
202 . 
Recent Publications. 204 
Correspondence. 
On glacial erosion, J. W. Spencer, 208.— 
Two systems confounded in the Huron- 
ian, A. Winchell, 212.—Artesian we 1 at 
Woodhaven, L. I., John Bryson, 214.— 
Personal and Scientific News__ 215 
THE AMERICAN GEOLOGIST, MINNEAPOLIS. 
tteral European Agent, W. P. Collins, 157 Great Portland St., London W. Eng. 
Entered at the Minneapolis post-office as second-class m alter. 
