XY1 



BULLETIN OF THE GEOLOGICAL SOCIETY OE AMERICA 



Repeats. Pages. Plates. Figures. ^ C l E ™. g££J.° 



Note on a very deep well near 



McDonald, Pennsylvania. I. C. 



White., '..... 275-2S2 ;... • ::.: $0:10 $0.15 



Certain theoretical considerations 



affecting phvlogenv and correla- 

 tion. W. ft Mattheh-t 283-292 ..:." 1 .10 .15 



Pre-Cambrian structure of the 



northern Black Hills. South 



Dakota, and its bearing on the 



origin of the Homestake ore 



body. S. Paige 293-300 .... 1-2 .10 . 15 



Petrology of a series of igneous 



dikes in central western Vir- 

 ginia. T. L. Watsox and J. H. 



Xline 301-334 7-9 1-5 .45 .65 



Northumberland Volcanic Plug. 



W. P. Ci-shing 335-350 10-11 1-4 .20 .30 



Alexandrian series in Missouri and 



Illinois. T. E. Sayaget 351-376 .25 .40 



Correlation problems suggested by 



a study of the faunas of the 



Eastport Quadrangle, Maine. .... 



H. S. Williams 377-39S .20 .30 



Earlv paleozoic delta deposits of 



North America. A. W. Grabau 399-528 12 1-12 1.35 2.00 



Pre-Wiseonsin glacial drift in the 



region of Glacier National Park, 



Montana. W. C. Aldev and 



E. Stebinger 529-572 13-16 . 1-8 .55 .85 



Water and volcanic activity. A. L. 



Day and E. S. Shepherd 573-606 17-27 .65 1.00 



Origin of the Bighorn dolomite of 



Wyoming. E. BLACKWELDERt.. 607-624 28-35 1 .40 .60 



Index to Ulrich's "Revision of 



the Paleozoic systems." E. O. 



TJlrich * 625-668 .4-5 .65 



Abstracts of papers presented at 



the Twenty-fifth Annual Meeting 



of the Society, but not published 



in full in the preceding pages of 



this volume, together with dis- 

 cussions of papers as far as pre- 

 served. E. O. Hoyey. Secretary 669-719 36 1-2 .55 .80 



t Under the brochure heading is printed Proceedings of the Paleoxtological So- 

 ciety. 



