VOLUME XXVlll NUMBER 7 



THE 



Journal of Geology 



A Semi-Quarterly 



Edited By 

 thomas c. chamberltn and rollin d. salii 



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, McGill University 



CHARLES K. LEITH, University of Wisconsin 



GERARD DeGEER, Sweden 



T. W. EDGEWORTH DAVID, Australia , . . . , ^^ ,„ . ^„,^^^ „ . „ • • 



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



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



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



OCTOBER-NOVEMBER 1920 



THE KATMAI REGION, ALASKA, AND THE GREAT ERUPTION OF 1912 



Clarence N, Fenner 569 



ON SOME PHYSICAL PROPERTIES OF ICE - - - - Motonori Matsuyama 607 



A TEST OF THE FELDSPAR METHOD FOR THE DETERMINATION OF THE ORIGIN 



OF METAMORPHIC ROCKS Charles Gordon Carlson" 632 



SUMMARIES OF PRE-CAMBRIAN LITERATURE OF NORTH AMERICA 



Edward Steidtmann 643 



REVIEW - - - - - - - - - - 659 



RECENT PUBLICATIONS -' 660 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO, ILLINOIS, U.S.A. 



THE CAMBRIDGE UNIVERSITY PRESS, London 



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



THE MISSION BOOK COMPANY, Shanghai 



