INDEX TO VOLUME 24 



733 



Page 

 Valley, Virginia ; Thomas L. Wat- 

 son and Justus H. Cline. . 53,302-334, 



682 



Petrunkevitch, Alexander ; Paleozoic 



Arachnida — scorpions and spiders.. 106 



Photographs, Report of Committee on. 48 



Phosphates of Florida, Origin of the 



hard rock 75, 716 



Phosphorus - bearing rocks of Am- 

 herst-Nelson counties, Virginia, Ig- 

 neous complex of high Titanium 53, 682 



Phyletic series, True nature of a 288 



Phylogeny and correlation, Certain 

 theoretical considerations affecting ; 

 W. D. Matthew 118, 283-291 



Phylum, Correlation of homotaxial 



stages of a 288 



Physiography of the southern Adiron- 



dacks, Early Paleozoic 72, 701 



Piedmont terraces of the northern Ap- 

 palachians and their mode of ori- 

 gin ; also post-Jurassic history of 

 the northern Appalachians ; Joseph 

 Barrell 70, 688 



Pirsson, L. V., Report on Nomenclature 



of Faults discussed by 49 



— , The Northumberland (New York) 



Volcanic Plug discussed by . .... 54, 683 



— , Visiting • geologists welcomed to 



Yale University by 2 



Pisanite and some large Staurolites 

 from Ducktown, Tennessee, A new 

 occurrence of ; Frank R. Van Horn. 



54, 686 



Plant tissue in the Carboniferous shales 



of Nebraska ; E. H. Barbour 113 



Platystrophia ponderosa var. steven- 



soni var 453 



Pleistocene Avifauna of the Pacific 



coast, Number of species recorded. . 132 



— deposits, Alberta, Canada. . 549, 552, 553, 



559 



— — , Sage Creek, Montana 571 - 



— fauna of Europe and North America, 



Comparison of the late ; H. F. Os- 

 born 120 



— formations of New York State ; Ad- 



dress of retiring President, Herman 



L. Fairchild 54, 132 



— geology of New York State ; Annual 



address of the President, Herman 



L. Fairchild 133 



— phenomena, New lork State excels 



any other equal area in 134 



— publications, Important New York 



State Museum 102 



— succession in Wisconsin ; Samuel 



Weidman 71 



Plesiosaurian genus (new) from Ne- 

 braska, Measurements of 121 



the Niobrara Cretaceous of 



Nebraska ; S. W. Williston and Roy 



L. Moodie 120 



Polyphyletic genera 1<»'.» 



Post-Chazy Age, Pamelia, Lowville and 

 Black rivers, Canada, parts of one 



group of Ill 



Post-Glacial earth movemenls from 

 the Lake region to the Saint Law- 

 rence Vallev, Extended determina- 

 tion of; J. W. Spencer. 74. 217-227, 711 

 Postglacial erosion, New York Slate. . K*>i> 

 Postma, G. E. ; Trachytic perlite from 

 Lone Hill, near San Jose\ Califor- 

 nia : '.»l 



Pottsvillk-Allegiieny boundary in the 

 interior province (Illinois and Mis- 

 souri coal fields) ; David White. T. r », TIC 

 Pratt, Joseph Hyde; New occurrence 



Of monazite in North Carolina . . 54,686 



Page 



Pre-Cambrian structure of the northern 

 Black Hills as bearing on the 

 Homestake ore body ; Sidney Paige. 



73, 293-300, 704 



Precipitation (level of maximum) as 

 a factor in the glaciation of Mount 

 Rainier ; F. E. Matthes 72, 701 



Preglacial Erie outlet 231 



President, Annual address of 54 



Presidential address to the Paleonto- 



logical Society ; W. B. Scott 106 



Pressure, Effect on solid substances of 



high 50, 675 



Pre-Wisconsin drift on the Blackfoot 



peneplain 536 



of the Keewatin ice-sheet, Deduc- 

 tions from relations of 545 



— • glacial drift in the region of Glacier 

 Park, Montana ; William C. Alden 



and Eugene Stebinger 71. 529-572 



(See also vol. 23, pp. 687-70*. 1 



— -r — National Park, 



Montana, Summary of paper on . . . 569 



Primates, Characters tending to ally 



Tupaiids and 248 



Proceedings of the Fourth Annual 

 Meeting of the Paleontological So- 

 ciety, held at New Haven, Connecti- 

 cut, December 30 and 31, 1912 ; 

 R. S. Bassler, Secretary 99-132 



Thirteenth Annual Meeting of 



the Cordilleran Section of the Geo- 

 logical Society of America, held at 

 Stanford University, California, 

 April 5, 1912 ; George D. Louder- 

 back, Secretary 91-98 



Twenty-fifth Annual Meeting of 



the Geological Society of America, 

 held at New Haven, Connecticut. 

 December 28, 29, 30, and 31, 1!)12 : 

 E. O. Hovey, Secretary 1-90 



Pterygoid, epipterygoid, and alisphe- 



noid, Relations of 244 



Purdue, A. H., Report on Nomenclature 



of Faults discussed by 4!> 



Pyrotiierium Beds of Patagonia, Pre- 

 liminary discussion of tin 1 stratig- 

 raphy and age of the; Frederick 1'.. 

 Loomis 52, 107 



Quadrangles, General geology of the 



San Jose and Mount Hamilton 06 



Quartz-garbro (tonalose (?)) in Vir- 

 ginia. Analysis and norm of. . . :;i 1 :".l .". 



.Megascopic and microscopic 



character and chemical composi- 

 tion and classification of 811-318 



Quereau, I-], c : Reference to ins "To 

 pography and history of Jamesvllle 

 Lake" 154 



Ransome. v. L.. On Committee on the 



Nomenclature 0!' Faults If.:: 



— .Reference to his paper. "Economic 



Geology" L68 



Raton Mesa region of Colorado and 

 New Mexico, Coal bearing rocks of 

 the in 



Raymond. i\ ID. : Correlation of the 



Middle Ordo\ iciau forma I ions of 



Ontario and Quebec Ill 



— , Richmond formations of Ontario ami 



< juebec discussed i.\ 110 



Red Beds between Wichita Palls, Tex is, 



and Las Vegas, New Mexico, in re 



lation to iheii- vertebrate fauna ; 



i:. C. Case 52 



, Juniata ami Queenston 180 



