INDEX TO VOLUME 27 



Page 

 Ablemans, Wisconsin, Cambrian sand- 

 stones at 459 



Adams, Frank D., and Wm. J. Dick ; 

 Extension of the Montana phos- 

 phate deposits northward into Can- 

 ada 62 



Adams, M. K., Analyses by 215 



Additional characters of Tyrannosaurus 

 and Ornittiomimus ; Henry Fair- 

 field Osborn 150 



Adirondacks, Analyses of normative 



feldspar from 216 



syenites from 214 



— , Glacial lakes and features of 65 



of the central 645 



Agassiz, A., cited on Keweenaw series. 94 

 — , Reference to coral-reef memoirs of. . 333 

 Agassiz, L., cited on Bethlehem mo- 

 raines 272-278 



glacial phenomena 67 



glaciation in New Hampshire.. 



264-291 

 — ; On the former existence of local 



glaciers in the White Mountains . . 264 

 Air-breathing, Diagrams showing pos- 

 sible mode of evolution of 432 



Akerite, Comparison of syenite with.. 206 



Akerites, Analyses of 207 



Alabama crystalline marbles 63 



— , Crystalline marbles of 437 



Alaska, Correlation of Triassic rocks 



of 704 



— , Lake Iditarod region of 114 



— , Triassic rocks of 119, 685 



Alberta, Canada, Cretaceous of . . . 85, 673 

 Alden, W. C, Remarks on Iowan drift 



by 117 



Alexandrian epoch in the Mississippi 



Valley, History of 314 



— rock fossils, Analyses of 316-324 



, Photograph of 324 



— ■ rocks in Illinois, Stratigraphy of. 306-307 



— northeastern Illinois 305 



-of northeastern Illinois and east- 

 ern Wisconsin ; T. E. Savage 305 



the Mississippi Valley, Correla- 

 tion with early Silurian strata of. . 312 



— strata in Wisconsin 308 



Alg;e fossils from Colorado and Utah. 159 

 — , Yellowstone Park and Algonkian . . . 156 



Algonkian algae 156 



Alkaline rocks, Reference by Daly to. 328 

 Allen, R. C, cited on Keweenaw series 



94-97 

 Alling, Harold L. ; Glacial lakes and 

 other glacial features of the cen- 

 tral Adirondacks 65, 645 



Altitudes and warping in the Ontario 



basin 243 



American Lower Ordovicic formation.. 555 

 Amherstburg, Ontario, Photograph of 



Anderdon at 72, 76 



— ■ — ■ pre-Onondaga jointing at... 74 



Ami, H. M., Remarks on corals by 147 



■ — Guelph formation by 148 



Ammonoosuc glacier 284 



— Valley and White Mountains, Outline 



map of 263 



Amphibians, Environment of early. . . . 409 



— , Evaluation of causes in rise of 414 



— , Rise of 391 



Anacacho limestone of Texas 44 



Page 



Analyses of akerites 207 



— - — Alexandrian rock fossils 316-324 



— - — feldspar composition of syenite 

 from Adirondacks, New York, and 



Blue Ridge, Virginia 216 



feldspars from Triassic diabase.. 642 



— ■ — gabbros 229 



hypersthene syenite 200, 202 



— ■ — normative feldspar 200 



-pyroxene from Triassic diabase.. 641 



— — of pyroxenite 232 



■ quartz monzonites 205 



■ — — rocks of charnockite series 218 



syenite 199 



■ ■ — (andesine anorthosite) of Vir- 

 ginia 211 



— — syenites from Adirondacks 214 



Triassic diabase 640 



— ■ — unakite 222 



— , Table of chemical 54 



Anderdon limestone at Amherstburg, 



Ontario, Photograph of 72 



— - — , Photograph of 72, 76 



Anderson, J. G., Reference to "Ueber 

 die Cambrische und Silurische phos- 

 phorit-fiihrende Gesteine aus Schwe- 



den" of 611 



Andesine anorthosite syenite compared 



to hypersthene syenite 209 



Andesites and their genetic associates. 327 

 Andrews, E. C, cited on barrier reefs. 45 

 An early Pliocene monodactylous horse ; 



Edward L. Troxell 151 



Angelin, , cited on paleontologic 



subdivision of strata 585 



Annes, E. C, cited on Mesonacidae. . . . 158 

 Anthropoids, Phylogenetic review of 



recent and extinct 149 



Anticosti Island faunas (the) ; W. H. 



Twenhofel 311-312 



Apatite- i lmenite gabbro 228 



Apatosaurus, Description of a new spe- 

 cies of 151 



— , Skeleton in Carnegie Museum of . . . . 153 



Arenig shales 574 



Argentina, Fossil deer from 153 



Arid period of the Permian and Triassic 181 



— zones of the Pleistocene and present. 180 

 Arkose deposits, Classification of. ..... 115 



Ashley and Blatchly, Reference to 



"The lakes of northern Indiana and 

 their associated marl deposits" by. 360 



Ashley, George H. ; Experiment in the 

 graphic presentation of the eco- 

 nomic geology of bedded deposits. . 122 



Atlantic Plain, Upper Cretaceous de- 

 posits of 154 



Attrill, — , cited on drilling of test well. 74 



Atwood, Wallace W., and Kirtley F. 

 Mather ; Geographic history of the 

 San Juan Mountains since the close 

 of the Mesozoic era 3S 



— , Reference to "Some Triassic fossils 



from southeastern Alaska," of . . . . 701 



— , Remarks on banded clays by Ill 



Auburn, California, Pleistocene mam- 

 mal fauna near 169 



Auditing Committee, Appointment of 



Paleontological Society's 144 



— — , Election of 77 



, Report of 60 



(719) 



