CONTENTS 



Page 

 Proceedings of the Fourteentli Suinnier Meeting, held at Pittsburg, Pennsyl- 

 vania, July 1, 1902 ; H. L. Faikchild, Secretary 1 



Session of Tuesday, July 1 1 



Election of Fellows . 1 



Delegates to Hugh Miller Centenary 2 



Geological excursion in the Pittsburg region ; by U. S. Grant 3 



Meteorites of northwestern Kansas [abstract] ; by O. C. Farrington. 6 



Mohokea caldera on Hawaii ; by C. H. Hitchcock 6 



Ellipsoidal structure in pre-Cambrian rot-ks of Lake Superior region 



[abstract] ; by J. Morgan Clements 8 



Vermilion district of Minnesota [abstract] ; by J. Morgan Clements. 9 

 Development of the southeastern Missouri lowlands [abstract] ; by 



C. F. Marbut 10 



Memorial tablet on the Emmons house, Albany, New York 10 



Register of the Pittsburg meeting , 14 



Lower carboniferous of the Appalachian basin ; by John J. Stevenson 15 



Meteorite from Algoma, Wisconsin ; by William Herbert Hobbs 97 



Pacific mountain system in British Columbia and Alaska; by Arthur C. 



Spencer 117 



Was man in America in the Glacial period ? Annual address by the President, 



N. H. WiNCHELL 133 



Marl-loess of the lower Wabash valley ; by M. L. Fuller and F. G. Clapp. . . 153 

 Shifting of faunas as a problem of stratigraphic geology; by Henry Shaler 



Williams 177 



Stratigraphic rslations of the Eed beds to the Carboniferous and Permian in 



northern Texas ; by George I. Adams , 191 



Ames knob, North Haven, Maine ; by Bailey Willis 201 



Submarine valleys off the American coast and in the north Atlantic ; by J. W. 



Spencer 207 



Clastic dikes ; by J. F. Newsom 227 



Synthesis of chalcocite and its genesis at Biitte, Montana; by Horace V. 



WiNCHELL 269 



Geographic development of northern Pennsylvania and southern New York ; 



by Ma rius R. Campbell 277 



Northward flow of ancient Beaver river; by Richard R. Hice 297 



Leiicite hills of Wyoming ; by J. F. Kemp and W. C. Knight 305 



Paleozoic coral reefs ; by Amadeijs W. Grabau 337 



Concretions and their geological effects ; by J. E. Todd 353 



Studies of the grain of igneous intrusives ; by Alfred C. Lane . . . ' 369 



Porphyritic appearance of rocks ; by Alfred C. Lane ... 385 



Ordovician section near Bellefonte, Pennsylvania; by George Lucius Collie. 407 

 Genesis of the amphibole schists and serpentines of Manhattan island, New 

 York ; by Alexis A . Julian 421 



(iii) 



