INDEX TO VOLUME 11 



647 



Page 

 Oklahoma, Physiography of Wichita Moun- 

 tain region in 130 



— , Red beds in Wichita mountains in 140 



— , Rock types of Wichita Mountain region 



in 133 



— , Sedimentary rocks of Wichita mount- 

 ains in 138 



Old Red sandstone, Equivalence of the De- 

 vonian and 254 



Onondaga group, Salt basins of. 339 



— limestone, New York, Occurrence and 



character of 3G2 



Ontario, Conglomerate near Rainy lake in... 110 



— , Dore conglomerate in 109 



— , Extent of iron range in 108 



— , Ferriferous sandstones, cherts, and jas- 

 pers of. 107 



— , Huronian area of 107 



— , Oriskany formation in 324 



fossils from 324 



— , Upper and Lower Huronian in 107 



Ordonez, E., cited on geology of Sonora, 



Mexico 11 



Ordovician limestones, White clay associ- 

 ated with 484 



Ore deposits, Chemical changes in 183 



, Sulphide enrichment of 180 



Ores, Limonite, of Pennsylvania 475 



Oriskany fauna, Elevation of Atlantic bor- 

 der coincident with 339 



, European equivalents of. 336 



— formation, Character and distribution of. 289 



, Fossils of 292 



in Alabama, Occurrence and character 



of 322 



Canada, Occurrence and character 



of 323 



Georgia, Occurrence and character 



of 322 



Illinois, Occurrence and character 



of 317 



Maryland, Fossils from 313 



Michigan, Occurrence and charac- 

 ter of 353 



New Jersey, Occurrence and charac- 

 ter of 310 



New York, Occurrence and charac- 

 ter of. 301,302, 303 



Pennsylvania, Occurrence and char- 

 acter of ..'. 310 



Tennessee, Occurrence and charac- 

 ter of 319 



Virginia, Occurrence and character 



of 315 



West Virginia, Fossils from 315 



, Local development of faunas of 300 



, Lower Devonic aspect of Lower Hel- 



derberg and 241 



named " shell grit" by Eaton 289, 300 



, Section of, near Cumberland, Mary- 

 land 271 



, Subdivisions of 289 



— fossils, from Canada, Lists of 324, 328, 331 



Pennsylvania, Lists of 311, 312 



— , Upper. See Upper Oriskany. 



Orton, Edward, Bibliography of 546 



— , cited on Manlius limestone in Ohio.. 352, 353 



-- -, Memoir of 542 



— , Title of paper by 2 



Orthothetes hydraulicus (Whitfield), De- 

 scription of 365 



— , Figures of. 375 



Osborn, H. F., cited on fossil horse from 



Gay Head 459 



Ouachitite, Analysis of 406 



Owen, Richard, cited on the tetrahedral 



earth 74 



Ozark uplift, Archean crystallines of 233 



, Flint or chert in 234 



, Fractures in 236 



, Geography of. 231 



Page 



Ozark uplift, Limestones of 234 



, Lithology and age of 233 



, Mineralization of rocks of 237 



, Mining districts of 232 



— — , Monoclinal character of. 235 



, Relations between ore deposits and ... 231 



, Sandstones of 234 



— — , Stretching of strata in 235 



Packard, , cited on valley glaciers of 



New England 439 



Pali gap, Oahu, Rocks of. 34 



Parker, H. A., Acknowledgments to 128 



Patton, Horace B. ; Thomsonite, mesolite, 

 and chabazite from Golden, Colorado ... 461 



. — , Title of paper by 615 



Peach, B. N., and John Home quoted on 

 uppermost Silurian rocks of Great 



Britain 247, 248 



Pearl River series, Oahu, Extent and char- 

 acter of 31 



, Section of 32 



Penfield, Samuel Lewis, elected Fellow 520 



Pennsylvania, Limonite ores of 475 



— , Oriskany formation in 309 



fossils from 311 



Penrose, R. A. F., Jr., cited on ore deposits. 182, 



183 

 Perkins, H. C, Fossils described and fig- 

 ured by 613 



Petersson, , Rock analysis by 412 



Pikes Peak region, Goat-antelope from cave 



fauna of 610 



Pine Mountain section, Santa Lucia range, 



Characters of 424 



Pirsson, L. V., cited on differentiation of 



magmas 396, 398, 410 



laccoliths 410 



shonkinite 400 



tinguaite-porphyry 405 



— , Record of remarks by 604 



— and W. H. Weed cited on laccoliths 407 



Phillips, , cited on the Devonian 253 



Plainville, Massachusetts, Blake Hill fault 



block of. 451 



, Distribution and character of strata 



of 450 



, Geologic map of 451 



, Geology of. 450 



, Rainprint horizons of 452 



, Vertebrate footprints on Carboniferous 



shales in 449 



Plants, Fossil. See Fossil plants. 



Platt, W. G., cited on Alleghany series 147 



Player, , Rock analysis by 413 



Pleistocene deposits at Gay Head, Contents 



of 456, 457 



, Relations between Cretaceous 



beds and 457 



, Structure of 456 



Pleurotomaria (?) sp M Description of 370 



Plutonic rocks, Snoqualmie pass, Washing- 

 ton, Characters and occurrences of 225 



Porphyritic volcanic rocks, Massachusetts, 



Occurrences and characters of 125 



Portugal, Copper in pyrite deposits of.. 198, 199 



Posepny, F., cited on ore deposits 182 



Powell, J. W., cited on Tertiary lakes of 



Rocky Mountain region 597 



Pratt, J. H., Title of paper by 10 



Pre-Cambrian, Upper Algonkian terrane of 



the 3 



Preston, E. D., quoted on the shape of the 



earth 72 



Price, J. A., Work on Indiana coal survey by. 8 

 Prime, Frederick, cited on limonite ores... 486 



Prinz, W., Torsion map by 93, 94 



Proceedings of the Eleventh Summer Meet- 

 ing, held at Columbus, Ohio, August 22, 

 1899 ; H. L. Fairchild, Secretary i 



XC— Bull. Geol. Soc. Am., Vol. 11, 1899 



