A 6r 
CONTENTS. 
JULY NUMBER. 
The Origin of Eskers. ]V. O. Crosby i 
On the Deceptive Fossilization of Certain Pelecypod Species, and 
ON THE Genus Eurymya. F. JV. Sardeson 39 
HussAKiTE, A New Mineral, and its Relation to Xenotime. 
E. H. Kraus and J. Reitingcr 46 
Note on the So-Called Basal Granite of the Yukon Valley^. 
R. G. McConnell 55. 
Editorial Comment. 
"The Monthly American Journal of Geology and Natural 
Science" 62 
Review of Recent Geological Literature- 
Summary Report of the Geological Survey Department for 
the calendar year 1901. Robert Bell, Director 64 
Monthly Author^s Catalogue of American Geological Lit- 
erature 65 
Correspondence. 
Columbia University Summer School. H. W. Sliimer 69- 
Personal and Scientific News- 
New Mexico School of Mines 72 
The Hugh Miller Centenary 72 
Portland Cement- in America 72 
AUGUST NUMBER. 
Two Cases of Metamorphosis without Crushing. B. K. Em- 
erson. [Plate I.] 72, 
On the Crinoid Genera Sagenocrinus, Forbesiocrinus and 
Allied Forms. Frank Springer 88 
Notice of a New Comatula from the Florida Reefs. Frank 
Springer 98 
Geological Age of Certain Gypsum Deposits. Charles R. Keyes, 99- 
Growth of the Mississippi Delta. Warren UpJiain 103 
List of the Most Important Volcanic Eruptions and Earth- 
quakes IN Western Nicaragua within Historical Time. 
/. Crazi'ford 1 1 1 
.579 1 7 
