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Published
February, March, May, June, August, September, November, December, 1913
Composed and Printed By The University of Chicago Press Chicago, Illinois, U.S.A.
CONTENTS OF VOLUME XXI
NUMBER I
THE SECONDARY ENRICHMENT OF SILVER ORES. H. C. Cooke
THE GEOLOGY OF LUZON, P.I. Warren D. Smith, Ph.D.
PRELIMINARY Notes on SOME IGNEOUS ROCKS OF JAPAN. S. Kôzu .
THE QUIZZYHOTA LACCOLITE. E. H. L. Schwarz .
AN ACCESSORY LENS FOR OBSERVING INTERFERENCE FIGURES OF
SMALL MINERAL GRAINS. Albert Johannsen .
96
NUMBER II
THE RELATIVE SOLUBILITIES OF THE CHEMICAL CONSTITUENTS OF
Rocks. C. H. Smyth, Jr. .
105
THE COBALT SERIES; ITS CHARACTER AND ORIGIN. Morley E. Wilson
THE LATER CENOZOIC HISTORY OF THE WIND RIVER MOUNTAINS,
WYOMING. Lewis G. Westgate and E. B. Branson
VARIATIONS OF CERTAIN ADIRONDACK BASIC INTRUSIVES. William J.
Miller
121
142
160
"THE ORDER OF CRYSTALLIZATION IN IGNEOUS ROCKS." Victor
Ziegler
181
ANGISTORHINUS, A NEW GENUS OF PHYTOSAURIA FROM THE TRIAS
OF WYOMING. Maurice G. Mehl
186
REVIEWS
192
NUMBER III
CHEMICAL COMPOSITION AS A CRITERION IN IDENTIFYING META-
MORPHOSED SEDIMENTS. Edson S. Bastin
193
OBSERVATIONS ON THE FELDSPARS. Austin F. Rogers
202
ROCK CLASSIFICATION ON THREE CO-ORDINATES. Alexander N.
Winchell
208
THE OLD EROSION SURFACE IN IDAHO. Joseph B. Umpleby
NOTES ON THE ORIGIN OF CERTAIN PALEOZOIC SEDIMENTS, ILLUSTRATED
BY THE CAMBRIAN AND ORDOVICIAN ROCKS OF CENTER COUNTY,
PENNSYLVANIA. Thomas C. Brown
THE SECONDARY PRECIPITATION OF GOLD IN ORE BODIES. Albert D.
Brokaw
ORIGINAL STREAMS; AND THEIR Rôle in General Desert-Leveling.
Charles R. Keyes.
THE NATURE OF THE LATER DEFORMATIONS IN CERTAIN RANGES OF
THE GREAT BASIN. Charles Laurence Baker.
EDITORIAL
NUMBER IV
PAGE
251
268
273
279
284
GLACIAL DEPOSITS OF THE CONTINENTAL TYPE IN ALASKA. R. S.
Tarr and Lawrence Martin.
THE UNCONFORMITY AT THE BASE OF THE ONONDAGA LIMESTONE IN
NEW YORK AND ITS EQUIVALENT West of BUFFALO. Edward M.
Kindle
SECTIONS OF TWO MICHIGAN SALT WELLS. William H. Fry
THE HURON AND CLEVELAND SHALES Of Northern OHIO. Charles S.
Prosser
289
301
320
323
OSTODOLEPIS BREVISPINATUS, A NEW REPTILE FROM THE PERMIAN OF
TEXAS. S. W. Williston
363
NOTE ON THE GEOLOGY OF THE ISLE OF PINES, CUBA. O. E. Jennings
367
370
RECENT PUBLICATIONS
379
NUMBER V
THE SIGNIFICANCE OF RECENT DEVELOPMENTS IN THE PRE-CAMBRIAN
STRATIGRAPHY OF THE LAKE SUPERIOR-LAKE HURON REGION.
Morley E. Wilson
THE ORDER OF CRYSTALLIZATION IN IGNEOUS ROCKS. N. L. Bowen
PSEUDOBRECCIATION IN ORDOVICIAN LIMESTONES IN MANITOBA.
339
R. C. Wallace.
402
VARIATIONS OF GLACIERS. XVII. Harry Fielding Reid
422
THE EXTENT OF THE CORDILLERAN ICE-SHEET. Charles A. Stewart
AN EXPOSURE SHOWING POSt-Kansan GlaCIATION NEAR IOWA CITY,
IOWA. Morris M. Leighton
427
431
RECONNAISSANCE IN THE SOUTHERN WASATCH MOUNTAINS, UTAH.
G. F. Loughlin
436
NEW SPECIES FROM THE SANTA LUCIA MOUNTAINS, CALIFORNIA, WITH
A DISCUSSION OF THE JURASSIC AGE OF THE SLATES AT SLATE'S
SPRINGS. Charles H. Davis
GLACIAL POT-HOLES AT CROWN POINT, NEW YORK. E. Eugene
Barker
453
NUMBER VI
459
465
469
THE GENERAL PRINCIPLES UNDERLYING METAMORPHIC PROCESSES.
I. John Johnston and Paul Niggli
DIASTROPHISM AND THE FORMATIVE PROCESSES. I. INTRODUCTION.
T. C. Chamberlin
DIASTROPHISM AND THE FORMATIVE PROCESSES. II.
481
517
CERTAIN LIMITATIONS OF DIASTROPHISM.
OVERTHRUST FAULT IN NEARLY FLAT STRATA. G. Sherburne Rogers
CONTRAPOSED SHORELINES. Charles H. Clapp
SHELF-SEAS AND
523
534
537
THE BEARING OF PROGRESSIVE INCREASE OF VISCOSITY DURING IN-
TRUSION ON THE FORM OF LACCOLITHS. Sidney Paige
CROSS-BEDDING IN THE WHITE RIVER FORMATION OF NORTHWESTERN
SOUTH DAKOTA. Dean E. Winchester
541
550
BURIED VALLEY OF SUSQUEHANNA RIVER IN LUZERNE COUNTY, PENN-
SYLVANIA. N. H. Darton
557
THE EFFECT OF LEACHING ON DRIFT PEBBLES. J. A. Udden
564
568
574
NUMBER VII
DIASTROPHISM AND THE FORMATIVE PROCESSES. III. THE LATERAL
STRESSES WITHIN THE CONTINENTAL PROTUBERANCES AND THEIR
RELATIONS TO CONTINENTAL CREEP AND SEA-TRANSGRESSION.
T. C. Chamberlin.
577
II. John Johnston and Paul Niggli
588
THE PRIMITIVE STRUCTURE OF THE MANDIBLE IN AMPHIBIANS AND
REPTILES. S. W. Williston .
625
FOSSIL FEATHERS AND SOME HERETOFORE UNDESCRIBED FOSSIL BIRDS.
R. W. Shufeldt
628
THE VOLCANOES AND ROCKS OF PANTELLERIA. I. Henry S.
Washington
LOG OF WELL OF PENNSYLVANIA SALT COMPANY, DETROIT, MICH.
William H. Fry
NUMBER VIII
653
671
672
DIASTROPHISM AND THE FORMATIVE PROCESSES. IV. REJUVENATION
OF THE CONTINENTS. T. C. Chamberlin
673
THE VOLCANOES AND ROCKS OF PANTELLERIA. II. Henry S.
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
THE SKULLS Of Araeoscelis AND CASEA, PErmian Reptiles. Samuel
W. Williston
743