140 J. STANLEY-BROWN — INDEX TO VOLUMES 1 TO 10 



Page 



Oil formation of Quebec 4, 241 



— in southwestern Ontario 4, 2*26, 408 



— , Number of wells in Ontario producing 4, 235 



Oil-wells in central New York .... 4, 91 



Old tracks of Erian drainage in western New York ; G. K. Gilbert 8, 285 



Olenellus beds in Vermont 2, 334 



Oligocene of Greenland 9, 367 



Olivine-hypersthene-diabase, Definition of 2, 340 



Olrik, C. J. M., Reference to work in Greenland by 9, 363 



Olympic range of Washington 9, 112 



Omphalophloios, a new lepidodendron type ; David White 9, 329 



Omphyma, Discussion of genus 3, 277 



On a basic rock derived from granite ; C. H. Smyth, Jr.- 6, 4 



Oneota dolomite, Distribution and characters of 6, 177 



, Fossils of the 6, 179 



of the Magnesian series 6, 169, 177 



— formation, Relations of. 3, 342 



— limestone, Application of term 3, 464 



Onondaga creek, Preglacial valley of 10, 57 



Ontarian rocks of Canada 9, 224 



— system. Definition of. 1, 177 



Ontario, Clastic Huronian rocks of. 9, 223 



— , Gas and petroleum in southwestern 4, 225, 408 



— , Glacial lakes in 2, 258 



— , Moraine of retrocession in 1, 544 



— , Nodular granite from Pine lake '. 9, 163 



— BASIN, Old water levels in 10, 175 



— lake, Till cliff's on 2, 246 



Onyx deposits of Lower California 5, 508, 510 



Ophicalcites of the Adirondacks 6, 241 



Opis bed. Description of. 3, 403 



Optical properties of amphiboles 6,3 



Orange sand, Age of the 3, 183 



, Taxonomy of. 2,5 



Ordonez, Ezequiel, Election of. 8, 2, 360 



— ; Memoir of Antonio del Castillo 7, 486 



— , Reference to, in connection with Mexican geology 9, 20, 28 



Ordovician age of the Saint Peter sandstone 6, 170 



— , Eastern Adirondacks in the 8, 408 



— fishes of Colorado, Reference to 9, 89 



Oregon, Cretaceous of 2, 201 



-^ — and early Tertiary of northern 4, 205 



— , Deformations in 5, 453 



— , Fossils from 4, 250-252 



Lias of. 5, 408 



Upper Lias of the Blue mountains of 5, 418 



— , Shasta and Chico formations in 4, 245 



— , Submarine channels in 2, 325 



