INDEX 1^0 VOLUME 25 



Page 

 Aa lava, Formation of 641 



— lavas. Chronological table of 629 



Abbott, C. G., cited on solar radiation. 83 

 sun-spots' relation to climatic 



changes 485 



— volcanoes' relation to climatic 



changes 483-484 



Adaais, F. D.. Acted as toastmaster at 



annual dinner 80 



— cited on magmatic assimilation 261 



— , Discussion of magmatic differentia- 

 tion by 46 



— , Graphic method of representing the 

 chemical relations of a petrographic 



province 43 



Adams, N. K., Analysis of Adirondack 



rock by 251 



Adhemar, — ~, cited on gravitational 



attraction of glacial ice-bodv 223 



Adirondack region, Magmatic diflFeren- 



tiation and assimilation in. . . . 45, 243 



, Petrology of 244 



Adirondacks, New point in the geology 



of the . 47 



Africa, Changes of climate in. . . . 528, 541 



— , Inclosed lakes of 563 



— . Reference to climatic changes in . . . 482 

 African dinocephalians' relation to 



American pelycosaurs 143 



Agassiz, a., Reference to explorations 



by 166 



Age of the Don River glacial deposits, 



Toronto. Ontario ; G. F. Wright. . . 205 



glacial deposits in the Don 



Valley, Toronto. Ontario ; G. F. 



Wright 71 



Alabama, Geological work in 168 



— , Reference to Eocene shells from. . . . 161 

 Alaska, Cambrian or pre-Cambrian sedi- 

 mentary rocks of 187 



— , Carboniferous rock formations of. . 196 

 — , Devono - Cambrian limestones and 



dolomites of 190 



— , Devono-Ordovician shale of 195 



— ; Mesozoic - Pennsylvanian, Orange 



groups of 201 



— , Permo - Carboniferous (?) conglom- 

 erate of 199 



— , Pillow lavas of ; 619 



— , Pre-Cambrian metamorphic rocks of. 184 



— , Quaternary deposits of 202 



— , Submarine topography in Glacier 



Bay 88 



Alaska - Yukon boundary, Geological 



section along the 179 



, Igneous rocks of 203 



— , Paleozoic section of 137 



Alberta, Cretaceous-Eocene correlation 



in 355 



Albion formation 286 



Alberta, Post-Cretaceous floras of 334 



Aldrich, F. H., Reference to southern 



geological work by 163 



Algonkian, Rocks of the 40 



Allen, J. H., Geological work in Florida 



of 174 



Allen, R. C, cited on elliptical green- 

 stone schists 612 



Ameghino, , cited on dinosaurs. . . 401 



Amendments to the by-laws.. 49 



Page 



America, Record of storminess in 499 



American area of storm shifting, Chart 



of 512 



— Geological Society, Organization of. 160 



— Museum of Natural History, Geolog- 



ical investigation directed by 355 



Ami, H. M.. Discussion of intraforma- 



tional corrugation by 37 



origin of Saratoga mineral -wa- 

 ters by 38 



Ax alternative explanation of the ori- 

 gin of the Saratoga mineral wa- 

 ters ; R. Ruedemann 38 



Analysis of Adirondack rocks 250 



-^ — clastic material 692-730 



sediments, Methods of 657 



concretions ; L. J. Youngs 79 



granites 466 



oolitic sand of Great Salt Lake. . 758 



Pennsylvania oolite 767 



oolitic limestone 758 



pyrotherinm fauna ; F. B. Loomis. 140 



quartz rock and f elsite 473 



Quincy granite 466 



riebeckite-fegerite granite 466 



Salt Lake water 754-755 



Sokotra granite 466 



Anderson. F. M. : Fauna of the Oligo- 



cene ( ?) of Oregon 154 



— presided at meeting 150 



Anderson, T., cited on origin of pillow 



lavas 610, 644 



Anglo-Parisian basin, Typical charac- 

 ter of 341 



Animas formation 338 



Antelopes in the fauna of the Rancho 



La Brea ; A. C. Chandler 155 



AxTicosTi formation, Relation of the 



Cataract to the 291 



Apparent limits of former glaciation in 

 the northern coast ranges of Cali- 

 fornia ; R. S. Holway 120 



A pre-Cambrian unconformity in Ver- 

 mont ; A. Keith 39 



Arapahoe and Laramie, Erosion inter- 

 val between 347 



— beds 325 



— flora 331-333 



Arctic Ocean, Reference to climatic 



changes in 482 



Arctowski, H., cited on changes in 



temperature distribution 5-48 



— cited on climatic changes 482 



— cited on sun-spots' effect on solar 



heat 488-489, 492 



— cited on temperature movements ... 83 

 Arcuate mountains, Mechanics of for- 

 mation of 30 



Argentina, Glaciation in 31 



Arizona, Erosion and deposition in ... . 125 



— , Record of rainfall in 535 



Arkansas, Geological work in 166 



Ashley, G. H.. Geological work in 



Tennessee of 168 



AsHTON schists 440, 442 



Asia, Climatic changes in 480 



— , Effects of sun-spots on climate In . . 549 



— , Inclosed lakes of 563 



Atwood, W. W. ; Early Tertiary glacia- 

 tion in the San Juan region of 

 Colorado 31 



LVII— Bull. Geol. Soc. Am., Vol. 25, 1913 



(781) 



