THE 
American Geologist 
A M(JNTHLY JOURNAL OF GEOLOGY 
ALLIED SCIE^'CES 
Kilitor: N. H. WINCHELL, Minneapolis. Minn. 
ASSOCIATE EDITORS. 
Florence Hascom, Bryn Mawr. Fa. 
Charles E. Beecher, A'cm) Haven, (Uxnn. 
Samdel Calvin, lon-a City, Iowa. 
John M. Clarke, Albany, N. Y. Persifoe Frazer, I'kiladvlphia. Fa. 
Edward W. Claypole, Pasadena. C'al. Ulysses S. Grant, Eoanston. III. 
Herman L. Fairchild, Rochester, N. Y. George P. Merrill. Wnshinyton. ]>. C. 
Warren Upham, St. Paul. Minn. 
Israel C. White, Morganton-n, W. Vu. 
VOLUME XXVI 
July to December, 1900 
Minneapolis, Minn. 
The Geological Publishing CoMPANy 
1900 
The Franklin Printing Co., Printer.^ 
