CONTENTS 



Pages 



Researches on Sedimentation. By Thomas Wayland Vaughan - 40 1 -4 1 



Physical and Geographic Criteria in the Study of Sedimentary 



Deposits. ByE. W.Shaw - - - - 411-418 



Chemical Researches on Sediments. By Herbert E. Merwin - 4 1 9-424 



Diagenesis in Sedimentation. By Charles Schuchert - - - - 425-432 



Oil Geology in Relation to Valuation. By Ralph Arnold - - 433-440 



Index to Volume 31 - 441-450 



Title-page, Contents, etcetera, of Volume 31 i-xviii 



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