_ VOLUME 
XXI NUMBER 8 
THE 
JOURNAL or GEOLOGY 
A SEMI-QUARTERLY 
EDITED BY 
THOMAS C. CHAMBERLIN AND ROLLIN D. SALISBURY 
With the Active Collaboration of 
SAMUEL W. WILLISTON ALBERT JOHANNSEN WILLIAM H. EMMONS 
Vertebrate Paleontology Petrology © Economic Geology 
STUART WELLER WALLACE W. ATWOOD ROLLIN T. CHAMBERLIN 
_ Invertebrate Paleontology Physiography Dynamic Geology 
ASSOCIATE EDITORS 
SIR ARCHIBALD GEIKIE, Great Britain GROVE K, GILBERT, Washington, D.C. 
HEINRICH ROSENBUSCH, Germany CHARLES D. WALCOTT, Smithsonian Institution 
THEODOR N. TSCHERNYSCHEW, Russia HENRY S. WILLIAMS, Cornell University 
CHARLES BARROIS, France JOSEPH P.IDDINGS, Washington, D.C. 
ALBRECHT PENCK, Germany JOHN C, BRANNER, Leland Stanford Junior University 
_ HANS REUSCH, Norway RICHARD A. F. PENROSE, Jr., Philadelphia, Pa, 
GERARD DEGEER, Sweden WILLIAM B. CLARK, Johns Hopkins University 
ORVILLE A. DERBY, Brazil WILLIAM H. HOBBS, University of Michigan 
_ T. W. EDGEWORTH DAVID, Australia . FRANK D. ADAMS, McGill University 
BAILEY WILLIS, Argentine Republic CHARLES K, LEITH, University of Wisconsin 
\ 
NOVEMBER-DECEMBER 10913 
DIASTROPHISM AND THE FORMATIVE PROCESS. IV. REJUVENATION OF THE 
CONTINENTS  - - - - - aot “ee = Ts C. CHAMBERLIN ..673 
THE VOLCANOES AND ROCKS OF PANTELLERIA. II - - Henry S. WASHINGTON 683 
_ A STUDY IN THE PETROLOGY OF SEDIMENTARY ROCKS - G. SHERBURNE ROGERS 714 
ON THE RELATIONSHIP OF THE SOUTH AFRICAN PERMIAN REPTILES TO THOSE 
OF RUSSIA - - = - - - - - - - - - R. Broom 728 
SOME PARTLY DISSECTED PLAINS IN JO DAVIESS COUNTY, ILLINOIS 
ARTHUR C. TROWBRIDGE 731 
i ‘THE SKULLS OF ARAEOSCELIS AND CASEA, PERMIAN REPTILES S. W. Wittiston 743 
- VARIATIONS OF GLACIERS. XVIII = - - - - - Harry FIeELpiInc Rem 748 
_ REVIEWS 
SP RR ifsc ty caine le SRN RA dadanple ure carte an cote! pairutv sett gist ickidda cic eh 
Tite UNIVERSUTY. OF “CHIGAG ©.“PRESS 
CHICAGO, ILLINOIS, U.S.A. 
AGENTS 
THE CAMBRIDGE UNIVERSITY PRESS, Lonpon anp EpinBuRGH 
WILLIAM WESLEY & SON, Lonpon 
KARL. W. HIERSEMANN, Lerpezic 
THE MARUZEN-KABUSHIKI-KAISHA, Tokyo, Osaka, Kyoto 
