raLUME XXX 



THE 



NUMBER 4 



Journal of Geology 



A Semi-Quarterly 



Edited By 

 thomas c. chamberlin and rollin d 



With the Active Collaboration of 



STUART WELLER, Invertebrate Paleontology 

 EDSON S. BASTIN, Economic Geology 



ALBERT . JOHANNSEN, Petrology 



ROLLIN T. CHAMBERLIN, Dynamic Geology 



ASSOCIATE EDITORS 



;IR ARCHIBALD GEIKIE, Great Britain 



:HARLES BARROIS, France 



\LBRECHT PENCK, Germany 



lANS REUSCH, Norway 



iERARD^ DeGEER, Sweden 



IR T. W. EDGEWORTH DAVID, AustraUa 



JAILEY WILLIS, Leland Stanford Junior University 



fcHARLES D. WALCOTT, Smithsonian Institution 



JOHN C. BRANNER, Leland Stanford Junior University 

 RICHARD A. F. PENROSE, Jr., Philadelphia, Pa. 

 WILLIAM H. HOBBS, University of Michigan 

 FRANK D. ADAMS, McGUl University 

 CHARLES K. LEITH, University of Wisconsin 

 WALLACE W. ATWOOD, Clark University 

 WILLIAM H. EMMONS, University of Minnesota 

 ARTHUR L. DAY, Carnegie Institution 



MAY-JUNE 1922 



PN CONTACT PHENOMENA BETWEEN GNEISS AND LIMESTONE IN WESTERN 

 MASSACHUSETTS ------.-.. Pentti Eskola 265 



!\ CRITICISM OF THE "FAUNAE RELATIONSHIPS OF THE MEGANOS GROUP" BY 

 BRUCE L: CLARK ---------- Roy E. Dickerson 295 



THE AGE OF THE DOMES AND ANTICLINES IN THE LOST SOLDIER-FERRIS DIS- 

 TRICT, WYOMING - - - - - - - - - - - A. E. Fath 303 



bN THE OCCURRENCE OF AN APUS IN THE PERMIAN OF OKLAHOMA 



Rudolf Ruedemann 311 



^ETROLOGICAL ABSTRACTS AND REVIEWS - - - - - - - - - 319 



REVIEWS ----------- 325 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO, ILLINOIS, U. S. A. 



THE CAMBRIDGE UNIVERSITY PRESS, London 



THE MARUZEN-KABUSHIKI-KAISHA, Tokyo, Osaka, Kyoto, Fokuoka, Sendai 



THE MISSION BOOK COMPANY, Shanghai 



