> J 
AA' 
THE 
AMERICAN GEOLOGIST 
A MONTHLY JOURNAL OF GEOLOGY 
AM) 
ALLIED SCIENCES. 
Editor: N. H. WINCHELL, Minneapolis, Minn. 
ASSOCIATE ELITORS: 
Florbncb Bascom, Bryn Maxvr, Pa. 
Chaklrs E. Bkecher. New Haven, Conn. 
Samuel Calvin, Iowa City, Iowa. 
John M. Clarke, Albany, N. Y. Ulysses S. Grant, Evanston, Hi. 
Herman L. Fairchild, Rochester, N. Y. Oliver Perry Hay, New Yotk,N. Y. 
Persipor Fkazer, Philadelphia, Pa. Gt-OKG-. P. Merrill, Washington, D.C 
Warkhn Upham, St. Paul, Minn. 
Israel C. White, Morgantown, W. Va. 
Horace V. Winchi»ll, Butte, Mont. 
VOLUME XXXII 
July to December, 1908 
Minnkapolis, Minn. 
The Geological Publishing Co. 
1903 
The University Press of Minnesota. 
