3 *?U 
THE 
American Geologist 
A MONTHLY JOURNAL OF GEOLOGY 
AND 
ALLIED SCIENCES 
EDITORS AND PROPRIETORS 
Charles E. Beechee, New Haven. Conn. 
Samoel Calvin, Iowa City, Iowa. 
John M. Clarke, Albany, N. Y. 
Edward W. Claypole, Akron. Ohio. Persifoe Frazer, Philadelphia. Pa. 
Francis W. Cragin, Colorado Springs, Colo. Edward O. Ulrich, Newport, Ky. 
John Eyerman, Easton, Pa. Warren Upham, Cleveland, Ohio. 
Marshman E. Wadsworth, Houghton Mich. 
Israel C. White, Morgantown, W. Va. 
Newton H. Winchell, Minneapolis, Minn. 
VOLUME XVII 
January to June, 1896 
Minneapolis, Minn. 
The Geological Publishing Company 
189( 
The Franklin Printing Co., Printers 
