498 



BULLETIN OP THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 r'ALEOXTtn^OGic criteria used iu deter- 

 mining time relations, General con- 

 sideration of 410 



— pliyla, The addition and evolution of 



"characters" in; H. F. Osborne... 151 

 I'ALEONTOLOGY Of man, Discussion on 



chapter of 147 



Paleozoic corals. Evolution of the 

 anthozoa and the systematic posi- 

 tion of 157 



— sediments. Organic origin of some 



mineral deposits in unaltered 85 



■ — stratigraphy of the region about 

 Three Forks, Montana; W. I'. 

 Haynes 157 



Pattox, H. B., Chairman of Session 



Decemlier 31, 1914 105 



Third Section 99 



— , First Section called to order V)y 



Vice-I'resident Gl 



— , Hyrum Schneider introduced by. . . . 398 



— ; Occurrence of flow-breccias in Colo- 

 rado 399 



— , I'hysiographic features of bolsons 



discussed by 393 



— ; Primary chalcocite in the fluorspar 

 veins of .Jefferson County. Colo- 

 rado 84 



— ; Recent remarkable gold "strike" at 

 the Cresson mine. Cripple Creek, 

 Colorado 84 



— , Remarks on recent eruptions of 



Lassen Peak, California, by 105 



the Coal Creek batholith by. . . 399 



Peccaries of the Pleistocene of New 

 York ; J. M. Clarke and W. D. 

 Matthew 150 



I'enxsylvaxia Piedmont, Pre-Cambrian 



igneous rocks of the 81 



Periodic table of Mendeleef cited on 



atomic weights of the elements... 190 



Perret, F. a., cited on condition of 



Stromboli, 1914 387 



"repose" conditions of Vesu- 

 vius 37<3 



I'etrib, W. i\I. F., Reference to abrasion 



by wind-driven sands 64 



Petrologic nomenclature. Plea for uni- 

 formity and simi^licitv in ; G. M. 

 Butler 134 



— problems of the Pacific area. Topic 



B. Summer fleeting in California, 

 1915 '. 390 



Philadelphia, Pennsylvania, Twenty- 

 seventh Annual Meeting of the 

 Geological Society of America. De- 

 cember 29, 30, and 31, 1914, held 

 at 1-128 



PiiiLiiTixEs, i'hysiographic control in 



the 395 



Phosphate deposits, Origin of the 



Rocky Mountain 100 



Photographs, Report of Committee on. 57 



PHiLOGEXY of the higher primates. Ob- 

 servations on the; W. K. Gregory. 153 



Lemuroidea, On the classifica- 

 tion and ; W. K. Gregory 426 



Pyrrhotite, norite, and pyroxenite 

 from Litchfield, Connecticut ; Ernest 

 Howe 83 



Physiographic control in the Philip- 

 pines ; W. D. Smith 395 



— features of bolsons. Some : H. E. 



Gregory 392 



• — • — • — western Europe as a factor in 



the war ; D. W. .Johnson 11(» 



— studies of the driftless area ; A. C. 



Trowbridge 70 



— study of the Cretaceous-Eocene pe- 



riod in the Rocky Mountain front 



I'age 

 and Great Plains provinces ; G. H. 

 Ashley 105 



PiivsiOGRAPHY, Block diagrams of 



State ; A. Iv. Lobeck 77 



Pic d^Aurore Section; .J. M. Clarke... 150 



I'ierce County coal field of Washing- 

 ton, Structure of ; .Joseph Daniels. . 132 



I*iRSSOX, Jj. v.. Discussion of origin of 



thick salt and gypsum deposits by. 103 



Pisolites at San Antonio, Texas ; 



Alexander Deussen 398 



I'lTHECAXTHRorus and Piltdown and 

 Neandertal man. Restoration of ; 

 J. H. McGregor 149 



PiUTTij A., cited on minerals not radio- 

 active 193 



Platixum-gold lode deposit in southern 



Nevada ; Adolph Ivnopf 85 



Pleistocbxe, Asphalt formation not 



later than Lower 167 



— climatic oscillations, Graphic pro.iec- 



tion of ; C. A. lieeds 106 



— man. Geologic deposits in relation 



to; C. A. Reeds 109 



— of New York, Peccaries of 150 



western Washington; ,J. H. Bi-etz. 131 



I'LioCE.VE of eastern Oregon, Review of 



the fauna of the Rattlesnake 169 



I'OOLE, H. H., cited on the conductivity 



of the earth's crust 190 



Porto Rico, Geological reconnaissance 



of 113. 150 



I'ost-Ordovician deformation in the 



Saint Lawrence Valley, New York ; 



<;. II. Chadwick 115, 287-294 



PoTO.MAC group. Age of the 336 



— invertebrate fauna 345 



"Potsda.m" and "calciferous" forma- 

 tions no more recognized 288 



I'ottsville in Ohio unconformity com- 

 pared with Berea 213 



I'owERS, Sidney ; Acadian Triassic 93 



— , Basic rocks of Rhode Island dis- 

 cussed by. 92 



— ; Geological history of the Bay of 



Fundv 94 



— introduced by R. A. Daly 9.3, 94 



Pratt, .T. IL, cited on attraction of the 



Himalayan range 178 



Pre-Ca.mhriax classification in Ontario, 

 Revision of ; W. G. Miller and C. 

 W. Knight 87 



— igneous rocks of the Pennsylvania 



I'iedmont ; F. Bascom 81 



— rocks of Ogdensburg-Canton quad- 



rangles 287 



Precipitatio.v, Relation of run-off to. . 22;i 



Predentate dinosaurs. Species found of. 329 



Pre-Pleistocexe geologv in the vicinity 



of Seattle ; C' B. Weaver 130 



I'residextial address of G. F. Becker. 



86, 171-204 



Pressure on rocks and minerals, Some 



effects of ; John .Johnston 83 



Prlmates, Observations on the phy- 



logeny of the higher 15."1 



Prohle.m of correlation bv use of verte- 

 brates : W. D. Matthew 411 



the Texas Tertiary sands ; E. T. 



Dumble 447 



Proceedixgs of the Fifth Annual Meet- 

 ing of the Pacific Coast Section of 

 the Paleontological Society ; C. A. 

 Waring. Secretary 166 



Fifteenth Annual Meeting of 



the Cordilleran Section of the Geo- 

 logical Society of America, held at 

 Seattle. Washington. Mav 21 and 

 22, 1914 ; G. D. Louderback. Secre- 

 tary 129-140 



