XEbe 3^outnal of 0eolog^ 



Vol. XXIII CONTENTS FOR APRIL-MAY i9\5 No. 3 



POST-CRETACEOUS HISTORY OF THE MOUNTAINS OF CENTRAL WESTERN WYOMING. PART II 



Eliot Blackwelder 193 

 THE MODE OF ORIGIN OF COAL Edward C. Jeffrey 218 



/CONTRIBUTIONS TO THE PETROGRAPHY OF JAVA AND CELEBES 



Joseph P. Iddings and Edward W. Morley 231 

 TRIMERORHACHIS, A PERMIAN TEMNOSPONDYL AMPHIBIAN - - - - - S. W. Williston 246 



THE GEOLOGY OF LIMESTONE MOUNTAIN AND SHERMAN HILL IN HOUGHTON COUNTY, MICHIGAN 



E. C. Case and W. I. Robinson 256 



SUMMARIES OF PRE-CAMBRIAN LITERATURE OF NORTH AMERICA FOR 1909, 1910, igir, AND PART 



OF 191 2. Ill --.-.-.--.-.-.-- Edward Steidtmann 261 



DISCOVERY OF THE NORMANSKILL GRAPTOLITE FAUNA IN THE ATHENS SHALE OF SOUTH- 

 WESTERN VIRGINIA - - S. L. Powell 272 



REVIEWS - - 282 



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