INDEX TO VOLUME 14 



603 



Page 

 Olean-Salamanca region. Geologic forma- 

 tions in 523-529 



structure in 52:i 



, Kilbuek conglomerate in 526 



, Knapp formation in 527-528 



, Oleaii conglomerate in 528 



, Oswayo formation in 527 



, Salamanca conglomerate in 52:)-52G 



, Topographic character of 523 



, Wolf Creek conglomerate in 524-525 



Olive shales, Ohio, Character, thickness, 



and correlation of. 26 



Onondaga limestone, Coral reef in, at Wil- 



liamsville, New York 340-341 



Orange county, New York, Mastodon re- 

 mains in 537 



Orangevit.le shales, Age of 40, 41, 42 



Ordovician limestones, Pennsylvania, Char- 

 acter and thickness of 410-412 



— rocks, Pennsylvania, Character and thick- 



ness of 408-412, 417 



— section near Bellefonte, Pennsylvania ; 



, Dip of 408, 417 



, Stratigraphy of 408-409 



G. L. Collie 407-420 



Ore deposits in Boulder county, Colorado, 



Genesis of. 565 



Oregon, Clastic dikes in 2.55 



— , Recent volcanic craters in. Character of.. 549 



— , Malheur and Harney lakes in 549 



Orenda mesa, Leucite hills. Lava flows of... 323 



, Location and topography of 322 



, Rocks of. 324 



, View of 323 



Orendite, Leucite hills. Character and oc- 

 currences of 314, 315-316, 



317, 319, 320, 322, 324 



— , Petrographic description of. 315-316 



— , Photomicrograph of..... 314 



Origin of Basin ranges [abstract] ; G. K. 



Gilbert 551 



ocean basins on the planetesimal hy- 

 pothesis [abstract] ; T. C. Chamberlin... 548 

 Orton. Edward, cited on clastic dikes in 



coal 261 



Logan sandstone of Ohio 27, 33-34 



Maxwell limestone in Ohio 55 



Osage river. Glacial boulders along, Occur- 

 rence of. 553 



OsANN, A., cited on the Palisade trap 371 



OsBORN mesa, Leucite hills. Naming of. 316 



, Orendite of 316 



— —, Topographic character of. 316 



OswAYO formation. Age of. 529-530 



, Character, occurrence, and thickness 



of 527 



, Pebble beds in 531 



Owen, D. D., Analysis of marl-loess from re- 

 port of 159 



— , cited on origin of the loess 174 



Owen, LuELLA, Aid by 143 



OxMooR sandstone. Character and thickness 

 of 74 



— shale. Equivalents of 73, 74, 96 



Pacific Mountain system in British Colum- 

 bia and Alaska ; Arthur C, Spencer.. 117-132 



— mountains. Definition of 117 



, Geologic age, relations in 131-132 



, Origin of 128-131 



. Peneplains in 121-122 



— province, Alaska, date of elevation of. 128, 132 



Palagonite tuff, Analysis of 448 



Paleontologicat, work in New Y'ork state ; 



John M. Clarke [abstract] 536-537 



Paleozoic coral reefs; A. W. Grabau 337 352 



Palisade trap, Studies of grain of 371-374 



Paris, France, Sand-pipes in neighborhood 



of, 254, 2r»6 



Page 

 Patagonia, Clastic dilces in, Occurrences of. 255 

 Pavlow, a. p., cited on clastic dikes in Rus- 

 sia 264-265 



Pawpaw i Maryland) quadrangle. Peneplain 



remnants in 289 



Peck, Frederick B. ; Basal conglomerate 

 in Lehigh and Northampton counties, 



Pennsylvania 518-521 



— , Record of remarks by 521, 543 



Pennington gap, West Virginia, Section at... 71 



— shales. Character and thickness of. 69, 70 



71, 72 



, Correlation of 83, 84, 85 



, Equivalents of 79 



Pennsylvania, Basal conglomerate in Le- 

 high and Northampton counties. Paper 



on, by F. B. Peck 518-521 



— , Beekmantown formation in. Character 



and thickness of 410, 417 



— , Fossils from 412-413,419-420 



— , Black River formation in, Character and 



thickness of. 411, 414, 417 



, Fossils of 414 



— , Carboniferous rocks in 45-54 



— , Clastic dikes in. Occurrences of 261, 266 



— , Devonian sections in 177 



— , Fossil faunas of Bellefonte section in... 



412-417 

 — , Lorraine formation in. Character and 



thickness of. 409,412, 417 



, Fossils of 416-417 



shale in. Dip of 408 



— , Magnesian limestones in. Character and 



thickness of 409-412 



— , Mohawkian group in. Correlation of 414 



, Fossils of 414 



, Thickness of 414,417 



— , Ordovician rocks near Bellefonte in. 



Fossils from..... 412-420 



section near Bellefonte in 407-420 



— , Pocono formation in. Character, distribu- 

 tion, and thickness of 17-26, 38-4(), 42, 44 



— , Salamanca conglomerate in. Occurrences 



of 529-530 



— , Stones River group in. Character and 



thickness of 411, 414, 417 



, Fossils of 414 



— , Trenton formation in. Character and 



thickness of. 411-412 



, Fossils of. 415-416, 418-419, 420 



— , Utica formation in. Character and thick- 

 ness of 412,417 



, Fossils of. 416-417 



shale in. Dip and thickness of. 408, 409 



— , Wolf Creek conglomerate in 529 



— , eastern, Physiographic features of. ...282-283 

 — , northern, Geographic development of 



southern New York and 277-296 



Penobscot bay,Maine, Character and extent 



of 201 



Penrose, R. A. F., cited on chemistry of the 



oxidation of pyrite 275 



Perdue, A. H., Record of remarks by .521 



Perkins, George Henry, elected Fellow 2 



Permian-Carboniferous contact, in north- 

 ern Texas, Outcrops along 103-196 



Permian elements in the Dunkard flora [ab- 

 stract] ; David White 538-542 



— rocks. Contact between Carboniferous 



and, in northern Texas 193-196 



— , Lithologic divisions of, in Arkansas, In- 

 dian Territory, and Texas. ..193, 197, 199-200 

 Petersburg, Indiana, Loess-covered till 



plains near 169-170 



— , Marl-loess at. Fossils of. 161 



Peters mountain. West Virginia, Pocono 



formation in 28 



Petrographic Section, Papers read before... 533 



Phenocrysts, Conceivable classes of 386-389 



Photographs, Committee on. Report of. 645 



