INDEX TO VOLUME 12 



Page 



Abandoned valleys of the Ohio basin, Hy- 

 pothesis to account for 462 



Accessions to library from June, 1900, to 



June, 1901 ; H. P. Gushing, Librarian 503 



Adams, Frank D., cited on Coal Measures of 

 southern Kansas 178 



— ; Experimental work on the flow of rocks 



[abstract] 455 



— , Record of remarks by 461, 479 



Adams Lake series, Occurrence and char- 

 acter of 67 



Adirondack mountains, Augite-syenite 

 gneiss from, origin and age of. 464 



Agassiz glacial lake. Position and extent 

 of 119 



Age of the coals at Tipton, Blair county, 

 Pennsylvania; David White 473 



Aitkin glacial lake, Position and extent of.. 120 



Albany, New York, Hudson River beds 

 near 11 



— meeting (1900), Proceedings of 395 



, Register of 492 



Albite feldspar, Metamorphism of grain of, 



figure showing 360 



Alexander, W. D., Map of Hawaii by 51, 52 



Alleged Parker channel (The) ; E^. H. Wil- 

 liams, Jr '. 463 



Allegheny river, Alleged abandoned chan- 

 nel of, near Parker, West Virginia 463 



— section, Correlation of Western Interior 



coalfield and 187 



Alluvial deposits in New England, Note 



on 483 



Altitudes along the Saint Croix river in 



Minnesota and Wisconsin 15, 16 



Ami, Henry M. ; Knoydart formation of Nova 



Scotia , 301 



— , Record of remarks by 473, 479, 483, 491 



— , Title of paper by 473 



Amphibolite, Rigaud mountain. Description 



of. 390 



Analyses: Andesitic rocks from Colorado... 8 



— : Granite from Geoi-gia 96 



— : Granite, porphyritic, from Georgia 98 



— : Hornblende syenite, Rigaud mountain. 386 

 — : Kittatinny limestone 152 



— : Porphyritic granite from Georgia 98 



— : Quartz porphyry, Rigaud mountain 389 



— : Quartz-syenite porphyry, Bearpaw 



mountains 389 



, Grenville, Canada 392 



, Rigaud mountain 389, 392 



Trenton limestone 157 



(Mechanical), Sand concretions 170 



Anderson, F. M. ; Neocene basins of the 

 Klamath mountains [abstract] 500 



Anderson river and Boston Bar group. Oc- 

 currence of. 68 



Andesitic rocks from Colorado, Chemical 

 analyses and composition of. 7, 8 



, Megascopic and microscopic de- 

 scription of. 5 



near Silverton, Colorado ; Frank R. 



Van Horn .' 4 



Antelope glacial lake. Position and extent 

 of 116 



— range, Nevada, Structure of. 226 



Aplitic dike, Rigaud mountain. Description 



of. 390 



Page 



Apostle islands, lake Superior, Spits on 211 



, Topography and geology of 198, 199, 



202, 20;-5, 204, 211, 212, 213, 214, 215, 216 



Aqui RANGE, Utah, Structure of 220 



Archean period, Physical history of the 



Rocky Mountain region in 84 



— rocks in Rocky Mountain region, Occur- 



rence and character of 62 



, Shuswap series 63 



Arizona, Evidences of shallow seas in Pale- 

 ozoic time in southern 493 



Arkansas, Basal series of Coal Measures in. 189 



— , Coal Measures section in 182 



— , Fossils from Coal Measures of. 181 



— , Productive Coal Measures in 177 



— , Subdivisions of Coal Measures in 191, 192 



— RIVER, Deep canyon valley of 298 



— VALLEY, Productive Coal Measures in 177 



Artesian wells, Evidence as to Keweena- 



wan-Cambrian fault line in Minnesota 



furnished by 321 



Ash beds in Cordilleran valleys, Nature of... 278 

 Ashburner, C. a., cited on age of the coals 



at Tipton, Pennsylvania 474 



potholes in Pennsylvania 38 



Ashes, Volcanic, on Hawaii 53 



-, Origin of 55 



Astoria group. Occurrence and character of 83 



Auditing committee. Report of ._. 465 



AuGiTE syenite. Origin and age of an Adi- 

 rondack 464 



Bad River bar, lalie Superior, Geologic his- 

 tory of 208 ♦ 



Baffinland, Laurentian limestones of 471 



Baldwin, C. W., cited on eruption of Mauna 



Loa 46, 47, 48 



Banff series. Occurrence, character, and 



thickness of. 69 



Barbour, E. H. ; Sand crystals and their 

 relation to certain concretionary forms.. 165 



— , Title of paper by 491 



Barlow, A. E., quoted on volcanic ash rock 



of the Knoydart formation 310 



Barnes, 0. P., Copper on farm of 2 



Barnum, Minnesota, Keewatin rocks near... 351 

 Barrier beaches, Wisconsin shore of lake 



Superior 213 



Basin ranges. Cross-sections of (typical) 270 



, Fault systems in 257 



theory of origin of. 260 



, Faults in, table of localities of. 258 



, History of deformation in 242 



, Origin and structure of 217 



of topographic forms of. 265 



, Typical front of, plate showing 266 



Bates, J. M., Aid by 168 



Bates hole, Wyoming, Description of. 495 



Bayley, W. S., cited on geology of Grand 



Portage bay, Wisconsin 317 



Beach deposits, Wisconsin shore of lake 



Superior 212 



Beaches, High-level, in southern Ontario... 138 



— , Marine and freshwater, of Ontario 12<J 



Belle isle, Brittany, Figure showing up- 

 land of 482 



, Origin of upland of 482 



, Peneplain near 482 



(523; 



