VOLUME XXX NUMBER 7 



THE 



Journal of Geology 



A Semi-Quarterly ^^,,,-^iiiill^^^^ 

 EDITED BY 1^ APR<;3 1S33' i^] 



THOMAS C. CHAMBEKu^ ^ ^/ 



With the Active Collaboration of 



:S5?AU MOSg 



ROLLIN T. CHAMBERLIN, Managing Editor 

 Dynamic Geology 

 STUART WELLER, Invertebrate Paleontology ALBERT JOHANNSEN, Petrology 



EDSON S. BASTIN, Economic Geology J HARLEN BRETZ, Stratigraphic Geology 



ASSOCIATE EDITORS 



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



CHARLES BAR ROIS, "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 



GERARD. DeGEER, Sweden CHARLES K. LEITH, University of Wisconsin 



SIR T. W. EDGEWORTH DAVID, Australia WALLACE W. ATWOOD, Clark University 



BAILEY WILLIS, Leland Stanford Junior University WILLIAM H. EMMONS, University of Minnesota 



CHARLES D. WALCOTT, Smithsonian Institution ARTHUR L. DAY, Carnegie Institution 



* Deceased. 



OCTOBER-NOVEMBER 1922 



THE NEPHELITE SYENITE AND NEPHELITE PORPHYRY OF BEEMERVILLE, 



NEW JERSEY ----- M. Axirousseau and Henry S. Washington 571 



INTRAFORMATIONAL CORRUGATED ROCKS - - - - William J. Miller 587 



THE PHYSICAL CHEMISTRY OF THE CRYSTALLIZATION AND MAGMATIC DIFFER- 

 ENTIATION OF IGNEOUS ROCKS ------- J. H.L. VOGT 611 



EDITORIAL E. S. B. 631 



PETROLOGICAL ABSTRACTS AND REVIEWS 632 



REVIEWS - - - -- 646 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO, ILLINOIS, U.S.A. 



THE CAMBRIDGE UNIVERSITY PRESS, London 



THE MARUZEN-KABUSHIKI-KAISHA, .Tokyo, Osaka, Kyoto, Fttkuoko, Sendai 



THE MISSION BOOK COMPANY, Shanghai 



