VOLUME XXVll NUMBER 2 



THE 



Journal of Geology 



A Semi-Quarterly 



Edited By 

 thomas c. chamberlin and rollin d. salisbury 



With the Active Collaboration of 



STUART WELLER, Invertebrate Paleontology ALBERT JOHANNSEN, Petrology 



ROLLIN T. CHAMBERLIN, Dynamic Geology 



ASSOCIATE EDITORS 



SIR ARCHIBALD GEIKIE, Great Britain JOHN C. BRANNER, Leland Stanford Junior University 



CHARLES BARROIS, France RICHARD A. F. PENROSE, Jr., Philadelphia, Pa. 



ALBRECHT PENCK, Germany WILLIAM H. HOBBS, University of Michigan 



HANS REUSCH, Norway FRANK D. ADAMS, McGiU University 



CHARLES K. LEITH, University of Wisconsin 



GERARD DeGEER, Sweden 



T. W. EDGEWORTH DAVID, AustraUa „r . :r , . ^^ „r . ^,„^^^ .. , ., . 



BAILEY WILLIS, Leland Stanford Junior University WALLACE W. ATWOOD, Harvard Umversity 



CHARLES D. WALCOTT, Smithsonian Institution WILLIAM H. EMMONS, University of Minnesota 



JOSEPH P. IDDINGS, Washington, D.C. "* ARTHUR L. DAY, Carnegie Institution 



FEBRUARY-MARCH 1919 



SOME STRATIGRAPHIC AND STRUCTURAL FEATURES OF THE PRE-CAMBRIAN OF 

 NORTHERN QUEBEC. I ---------- H. C. Cooke 65 



THE SALIENT FEATURES OF THE GEOLOGY OF OREGON. 



Warren Dupre Smith and Earl L. Packard 79 



SOME SUBORDINATE RIDGES OF PENNSYLVANIA - - - - Harry N. Eaton 121 



GLACIAL FEATURES ON THE SOUTH SIDE OF BEARTOOTH PLATEAU, WYOMING 



C. L. Dake 128 



REVIEWS ----- 132 



RECENT PUBLICATIONS - 138 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO, ILLINOIS, U.S.A. 



THE CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 



THE MARUZEN-KABUSHIKI-ELAISHA, Tokyo, Osaka, Kyoto, Fukuoka, Skndai 



THE MISSION BOOK COMPANY, Shanghai 



