640 EDITORIAL 
“Preglacial Topography and Drainage of Central-Western, New York.” 
By PROFESSOR H. L. FAIRCHILD, University of Rochester, Rochester, N. Y. 
“A Supplementary Hypothesis respecting the Origin of the American 
Loess.” By PROFESSOR T. C. CHAMBERLIN, University of Chicago, 
Chicago, III. 
“Progress of Hydrographic Investigations of the U. S. Geological Sur- 
vey.” By F. H. NEWELL, U. S. Geological Survey, Washington, D. C. 
“Stylolites.”” By PROFESSOR T. C. HOPKINS, State College, Centre Co. 
Pa. 
“A suggestion in regard to the Theory of Volcanoes.’’ By PROFESSOR 
WILLIAM NoRTH RIcE, Wesleyan University, Middletown, Conn. 
“The Ores and Minerals of Cripple Creek, Colorado.” By H. P. Par- 
MALEE, Charlevoix, Mich. 
“Observations on the Genus Barrattia.”” By PROFESSOR R. P. WHIT- 
FIELD, American Museum Natural History, New York, N. Y. 
“Tce Jams and what they Accomplish in Geology.” By Dr. M. A. 
VEEDER, Lyons, N. Y. 
