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44 
OURN: AL OF GEOLOGY 
A SEM QUARTERLY 
_EDITED By 
THOMAS C. CHAMBERLIN AND ROLLIN D. SALISBURY “~. : 
“With the Active Collaboration of oe 
SAMUEL W. WILLISTON, eres Paleontology » ALBERT JOHANNSEN, Petrology 
% STUART WELLER, Invertebrate Paleontology ROLLIN T. CHAMBERLIN, Dynamic Geology 
* ALBERT D. BROKAW, Economic Geology 
ASSOCIATE EDITORS 
SIR ARCHIBALD GEIKIE, Great Britain JOSEPH P. IDDINGS, Washington, D.C. 
CHARLES BARROIS, France JOHN C. BRANNER, Leland Stanford Junior University 
ALBRECHT PENCK, Germany RICHARD A. F. PENROSE, Jr., Philadelphia, Pa. 
HANS REUSCH, Norway ‘ WILLIAM H. HOBBS, University of Michigan 
GERARD DEGEER, Sweden 
T. W. EDGEWORTH DAVID, Australia FRANK D. ADAMS, McGill University 
BAILEY WILLIS, Leland Stanford Junior University CHARLES K. LEITH, University of Wisconsin 
GROVE K. GILBERT, Washington, D.C. WALLACE W. ATWOOD, Harvard University 
CHARLES D. WALCOTT, Smithsonian Institution WILLIAM H. EMMONS, University of Minnesota 
HENRY S. WILLIAMS, Cornell University ARTHUR L. DAY, Carnegie Institution 
MAY-JUNE 1918 
CORAL REEFS AND SUBMARINE BANKS = - - > = += = - W.M: Davts~ 289 
PERMO-CARBONIFEROUS GLACIAL DEPOSITS OF SOUTH AMERICA A. P. CoreMaN 310 
THE SUBPROVINCIAL LIMITATIONS OF PRE-CAMBRIAN NOMENCLATURE IN THE 
Cr EAWRENGH BASIN ©. gua pete ne ee ee NL Ex WabsoNes 325 
CORRELATION OF THE EARLY SILURIAN ROCKS IN THE HUDSON BAY REGION 
T. E. SAVAGE 334 
NOTES ON SEDIMENTATION IN THE MACKENZIE RIVER BASIN’ - E. M. Kinvte 
NOTES ON THE MISSISSIPPIAN CHERT OF THE ST. LOUIS AREA Downatp C. Barton 
EDITORIAL Ls aaepiaist Oy S SGN aR ey ATIC | pees UME Det cee tga SUN SuPer cna Mantel lia 
PETROLOGICAL ABSTRACTS AND REVIEWS -. - -  - | - ALBERT JOHANNSEN 
RCN TEU ERMC AMIONG suegmermme ena en iyay Vee uel tenn tyres Neck cur ey 
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(rhe UNIVER iY OC CHICAGO PRESS 
CHICAGO; TELINOIS, US 7A. 
THE CAMBRIDGE UNIVERSITY PRESS, Lonpon anp EpINBURGH 
THE MARUZEN-KABUSHIKI-KAISHA, Tokyo, Osaka, Kyoto, Fukuoka, SENDAI 
THE MISSION BOOK COMPANY, SHANGHAI 
