CONTENTS. 



[The letters in parentheses preceding the titles are those used to designate the papers for advance publication.] 



Page. 



(A) \n Eocene flora from trans-Pecos Texas, by E. W. Berry (;publishe(i Sept. 12, 1919) - 1 



(B) Gradations from continental to marine conditions of deposition in central Montana during the Eagle and 



Judith River epochs, by C. F. Bowen (published Oct. 20, 1919) H 



(C) Pliocene and Pleistocene fossils from the Arctic coast of Alaska and the auriferous beaches of Nome, Norton 



Sound, Alaska, by W. H. Dall (published Jan. 27, 1920) 23 



(D) The American species of Orthophragmina and LcpidoajcUna, by J. A. Cushman (published July 26, 1920) ... 39 

 Index 



ILLUSTRATIONS. 



Plates I-III. Fossil plants from the basal tuffs of the Barilla Mountains, Tex - 



IV. Geologic map of Jordan coal field, Mont., with columnar sections, structure sections, and 



diagrammatic section 



V-VI. Alaskan fossils 



VII-XI. American species of Orthophragmina 



XII-XXXV. American species of Lepidocyclina 



Figure 1. Restoration of Gconomitcs visianii Berry 



2. Restoration of the leaf of Ilex harillensis Berry shown in Plate III, figure 4b 



3. Diagrammatic vertical section of Lepidocyclina 



Pag^e. 

 4 



12 



36-37 



49-54 



81-105 



6 



56 



INSERT. 



Tentative correlation table of the Tertiary marine sedimentary formations of Panama. 

 II 



Page. 

 40 



