NUMBER ; 
uses 
GEOLOGY. 
ee ae SEM -QuaRreRiy eee 
a rages Nee EDITED BY 
‘THOMAS C. CHAMBERLIN’ AND ROLLIN D. SADBERW, 
With the Active ollznoration of 
A ALBERT IO HANN: SEN, Reviolony, 
: ROLLIN T. CHAMBERLIN, ‘Dynamic Geology 
‘ 
* 
ASSOCIATE EDITORS 
JOHN C. BRANNER, Leland Stanford Junior University 
~~. RICHARD A. F. PENROSE, Jr., Philadelphia, Pa. 
WILLIAM H. HOBBS, University of Michigan’ 
FRANK D. ADAMS, McGill University 
: CHARLES K. LEITH, University oi Wisconsin 
eat ‘EDGEWORTH DAVID, Australia , WALLACE W. ATWOOD, Clark Universi‘v 
BAILEY WILLIS, Leland Stanford Junior University WILLIAM H. EMMONS, University of Minnesota 
LES D. WALCOTT, Smithsonian Institution : Seis L, DAY, Carnegie Institution. 
JANUARY- FEBRUARY 1921 
a THE MECHANICAL INTERPRETATION OF JOINTS. il. - is WaLTER H. BucHER I 
OF A BODY oe ANORTHOSITE- GABBRO IN NORTHERN NEW YORK. 
4 Wittiam J. MILLER 29 
NEW FORM OF DIPLOCAULUS stata ORSON TSS aN . : M. G. Mem 48 
THE UNIVERSITY, OVE (© PCG.) PRESS | 
CHICAGO, ‘ILLINOIS, WSs Ay 
gi 
‘THE CAMBRIDGE UNIVERSITY PRESS, Lonpow She eee 
THE SER UeEN KABUSHIKI-KAISHA, Toxvo, Osaka, Kyoto, FUKUOKA, ae ee a 
THE MISSION BOOK COMPANY, Saancuar 
