IXDEX TO VOLUME « 



(09 



1*3. ""6 



Platt, F., cited on examination of '' 

 Salisbury coal basin 47 



variations of the Pittsburg 



coal bed 50 



Platt, W. G., cited on Elders Ridge 



coal area 55 



measurements of Salisbury 



basin 47 



— ■ variations of the ' pittsi3urs 



coal bed ; 50 



— , Coal beds in Indiana county meas- 

 ured by " 51 



— , Measurements of "Redstone" coal 



„ by 49 



Platteville limestone, Character and 



thickness of 186-189 



Pleasaxts county, West Virginia, 



Coal beds in 90 



Pleistocexe and Permian strophes. 



Comparison of 384 



— climatic strophe. Causes of.... 382-88-1 



— deposits. Evidences of complexity 



and succession of ' 510 



deposits of the Seyistan basin '. '. 



364-.366 



Turfan. Chinese Turl^estan. . . 376 



, Table of 512 



— fossils. Discovery near El Paso of!! 21.5 

 .Occurrence at Winthrop, Massa- 

 chusetts, of 509 



of the Afton craters 21.5 



— glaciation. Existence of 507 



— investigations in New England, Re- 



sults of 511-512 



. Reference to 511 



— period, (ilacial character of 354 



of climatic changes. Resume of 



characteristics of 360, 361 



— strophe at Lop basin, Chinese 



Turkestan, Number of climatic ' 

 cycles in 374, 375 



— succession. Correlations of 512 



— vegetal layers. Comparison with 



Mesozoic coal beds of 378 379 



Pocahontas coal beds in West Vir- 

 ginia. Character of I45 



Poetic forms. Analogy of climatic in- 

 fluences with 361, 362 



Portland, Maine, P"'ossiliferous clays" '" 



at : . 509 



. Occurrence of f ossiliferous clays 



at ". . .538 



.gravel deposits at . 527 



, Sand and gravel exposures at.. 515 



. Section of gravel pit at 516 



Positive elements, Geologic character- 

 istics of 393 



P0.ST-PALE0Z01C formations of the 



Uinta range 439-441 



PosT-Wiscoxsix deposits. Occurrence 



of 553 



PoTA.sH, Segregation of, by plants and 



animals 25 



PoTTSviLLE coal bed. Character of peb- 

 bles in 144 



— formation. Protective qualities of.. 45(» 

 — , Pennsylvania, Floras of 176, 177 



— shales. Ditference between Mauch 



Chunk and 455, 456 



PowE'E, ,T. W.. Canyons of the Colo- 

 rado explored by 289 



— cited on degradation of the Uinta 



range 446 



geology of Uinta mountains.. 



292-293 



shales in Lodore canyon 435 



— ■ structure of the Uinta range. 



442, 443 



— Tertiary beds of the Uinta 



range 441 



Pa*^'e 

 Powell, .T. W., cited on the .Tura beds ^ 



of the Uinta range 440 



.Tura-Trias beds of the 



Uinta range 439 



unconformities in the Uinta re- 



^.gion • 441 



— diirered from in regard to structure 



of Uinta mountains 299-302 



— , Geologic history of the Uinta range 



described by 428 



— . Uinta sandstone defined bv ! 4.34 



Powers, R. R., Acknowledgments to.. 257 

 Praestedal hanging vallev. Character 



., "t 419 



?RE-(AMBRiAX "Uinta" formation. No- 

 menclature and correlation of. 434 435 

 Precipit.\tes, Surface and subsurface. 15 

 Precipitatiox, Chemical reaction re- 

 sulting in 20, 22 



— , Effect of, in chemical concentra- 

 tion 20-22 



Pre.sidext, Anniial address of the So- 

 ciety's l-'iy 



Pre-Wiscoxsin clay, Drumlins ante- 



, fljte 549-550 



— drift in the Finger Lake region of 



New York, by Frank Carney 642 



Proceedixgs of the Nineteenth An- 

 nual Meeting, held at New York, 

 N. 1'.. December 27, 28, and 29, 

 including proceedings of the 

 Kiglith Annual ileeting of the 

 Cordilleran Section, held at Stan- 

 ford. California. Decemlier 28 and 

 29, 1906 ; Edmund Otis Hovey, 



Secretary 557 



Prosser, C. S.. cited on fossil inverte- 

 brates 167 



Proterozoic. Continental structure 



during the 393 



PuBLicATiox fund. Status of 564-566 



"Pulse of Asia. The," Reference to 



work entitled 354, 360 



J'rx.TAK. Climatic conditions in 475 



Purdue, A. H.. Cave-sandstone deposits 



of the southern Ozarks 251-256 



— . Title of naper bv 613 



PuRSLEi- coal bed, Occurrence of. . 117, 123 

 _''r'r\'AM I-Iill limestone. Occurrence of. 152 

 "Pyrite, Occurrence in Adirondack sve- 



nite of ". . 479 



Pyroxexe.s. Occurrence in Adirondack 



syenite of 479 



Quartz, Occurrence in Adirondack sye- 

 nite of ". . 479 



QU.4.RTZ0SE gneiss. Character of 423 



Quaterx.\ry cave deposit. Reconnais- 

 sance of a 660 



— .Continental structure during the.. 393 



— fossils of the Afton craters 215 



— sands of the Afton craters 213-215 



Radio-activity of the thermal waters 



of Yellowstone National Park.... 643 

 Raisix- river; Location and character 



of 343, .^44 



, Scaurs on ' 344 



Raquette river, Syenite between Fol- 



lensby pond and 481 



Read. JI. C. cited on his section in 



Coshoction county. Ohio 153 



Mercer limestones 149 



Receipt.s and expenditures, Statement 



of 567 



Recent advance of glaciers. Geologic 



effects of 284 



— in the Yakutat Bay region. 



Alaska, by Ralph S. Tarr 257-286 



