CONTENTS 



Pages 



Old and New Standards of Pleistocene Division in Relation 

 to the Prehistory of Man in Europe. By Henry Fairfield 

 Osborn and Chester A. Reeds 411-490 



Stages of the Ice Age. By Warren Upham - - - - - - 491-5 1 4 



Late Pleistocene History of the Lower Mohawk and Middle 



Hudson Region. By James H. Stoller ------- 515-526 



Kennecott Glacier of Alaska. By Alan M. Bateman - - - 527-540 



Map of the Pleistocene Lakes of the Basin-and- Range Prov- 

 ince and Its Significance. By Oscar E. Meinzer - - - 541-552 



Reconnaissance of the Eastern Andes Between Cochabam- 

 ba and Santa Cruz, Bolivia. By Kenneth C. Heald and 

 Kirtley F. Mather 553-570 



Trenton of Central Tennessee and Kentucky. By Percy E. 



Raymond 571-586 



Peneplains and the Geographical Cycle. By W. M. Davis - 587-598 



Variations or Specific Distinctions : Which ? By Richard 



SwannLull 599-604 



Volcanic Ash Bed in the Ordovician of Tennessee, Ken- 

 tucky, and Alabama. By Wilbur A. Nelson - - - 605-616 



Graphic Study of Igneous Rock Series. By Frank F. Grout 61 7-638 



Correlation of the Jurassic Formations of Western Cuba. By 



Barnum Brown and Marjorie O'Connell ----- 639-664 



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