THE 
America!^ Geologist 
A MONTHLY JOURNAL OF GEOLOGY 
AND 
ALLIED SCIENCES. 
EDITORS AND PROPRIETORS : 
Charles E, Beecher, Nexv Haven, Conn, 
Samuel Calvin, lo-wa City, lo-wa. 
John M. Clarke, Albany, N . Y. 
Edward W. Claypole, Akron, Ohio. Persifor Frazer, Philadelphia, Pa. 
Francis W. Cragin, Colorado Springs, Colo. Edward O. Ulrich, Newport, Ky. 
John Y.Y'e.vm.kh, Easton,Pa. Warren Upham, Cleveland, Ohio. 
Marshman E. Wadsworth, Houghton, Mich. 
Israel C. White, Morgantown, W. Va. 
Newton H. Winchell. Minneapolis, Minn. 
VOLUME XV. 
January to June, 1895. 
Minneapolis, Minn. 
The Geological Publishing Company. 
1895. 
Alfred Roper Printing Co., Printers. 
