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CONTENTS 



Page 

 Proceedings of the Fourth Summer Meeting, held at Rochester, August 15 and 



L6, L892 ; 1 1. L. Fairchild, Secretary 1 



Session of Monday, August L5 1 



Election of Fellows 1 



Studies of the Connecticut Valley Glacier ; by C. 11. Hitchcock..-.. :; 



Session of Tuesday Morning, August 16 , 8 



The Oneonta Sandstone and its Relations to the Portage, Chemung 



and Catskill Groups (discussion) ; by James Hall 8 



Session of Tuesday Afternoon, August 16 9 



Conditions of Accumulation of Drumlins (discussion); by Warren 



UlMIAM \) 



Ancient Waterways (abstract) ; by A. S. Tiffany 10 



Register of the Rochester Meeting 12 



Finite homogeneous Strain, Flow and Rupture of Rocks ; by G. F. Becker... 13 

 The Thickness of the Devonian and Silurian Rucks of central New York ; by 



C S. Prosser ill 



A new Tseniopteroid Fern and its Allies ; by David "White 119* 



Some Elements of land Sculpture ; by L. E. Hicks 133 



Some dynamic and metasomatic Phenomena in a metamorphic Conglomerate 



in the < rreen Mountains; by C. L. Whittle 147 



Phases in the Metamorphism of the Schists of southern Berkshire; by W. 



II. Hobbs U>7 



Continental Prohlems; Animal Address by the President, G. K. Gilbert 171) 



Comparison of Pleistocene and present Ice-sheets ; by Warren Upham 191 



Cretaceous and early Tertiary of northern California and Oregon; by J. S. 



DlLLER 207) 



On the Geology of natural Gas and Petroleum in southwestern Ontario; by 



H. P. H. Brumell 225 



Notes on the Occurrence of Petroleum in Gaspe, Quebec ; by IT. P. II. Brumell. 241 



The Faunas of the Shasta and Chico Formations ; by T. W. Stanton 245 



Two Neocene Rivers of California; by Waldemar Lindgren 257 



Some Maryland Granites and their ( >rigin ; by C. R. Keyes 299 



Epidote as a primary Component of eruptive Rocks ; by C. R. Keyes 305 



Relations of the Laurentian and Huronian Rocks north of Lake Huron; by 



A. E. Barlow 313 



The Archean Rocks west of Lake Superior ; by W. 11. ( '. Smith 333 



The Laurentian of the Ottawa District ; by R. W. Ells 349 



Height of the Bay of Fundy Coast in Hie Glacial Period relative to Sea-level, 

 as evidenced by marine Fossils in the Bowlder-clay at Saint John, New 



Brunswick ; by Robert Chalmers 361 



Proceedings of the Fifth Annual Meeting, held at Ottawa, Canada, December 



28, 29 and 30, 1892 ; H. L. Fairchild, S< m tary 371 



Session of Wednesday, December 28 372 



Report of the Council 372 



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