
READ 
Economic Geology 
THE 
New Semi-quarterly Journal 
devoted to discussions relating to the geological occurrences of materials 
of ECONOMIC VALUE, with particular reference 
to the genesis of ores. 
BOARD OF EDITORS. 
EDITOR. 
JOHN DUER IRVING 
Lehigh University, South Bethlehem, Pa. 
ASSOCIATE EDITORS. 
WALDEMAR LINDGREN, Washington 
MES F. KEMP, Columbia peto d New York. 
FREDERICK LESLIS RANSOME, Washington. 
REINRICH RIES, Cornell sar ae Ithaca. 
M pee B. CAMP L, Washington. 
+ K. LEITH, University of Wisconsin, Madison, Wis. 
TERMS. 
$3.00 per year to subscribers in the United States, Canada, Mexico, etc. 
$3.75 per year to subscribers in other countries. 


ECONOMIC GEOLOGY PUBLISHING COMPANY, 
S. Bayley, Business Manager, 
South Bethlehem, Pa. 
Dear Sir: 
Please send the Economic Geology to the address below for the year 
ending October, 190 Enclosed you will find i. in payment of 
same. 
NAME... 
ADDRESS 
DATE aa D gh PRIS iA EE ec olio ror i. 
Office orders should be made payable to W. S. BAvrEv, Manager, South 
urer. 

Pos 
Sca Pa.; adn should be made payable to GEORGE Otis SMITH, Treas 


