INDEX TO VOLUME 15 



Page 

 Accessions to Library from June, 1903, to 



July, 1904; H. P. Cushing, Librarian 587-596 

 Adams, G. I., cited on mergence of Red beds 



into Permo-Carboniferous rocks 437 



Adamsville coal bed, Synonymy of. 206 



Adirondack region, Checkerboard topog- 

 raphy in part of, Map showing 500 



Administration, Cost of 526 



Aoricola, Mineralogic work of 5 



— , Views of, Concerning genesis of ores 6 



Alabama, Pottsville formation in 126-136 



Alexander, West Virginia, Section at 183 



Algonkian rocks, Bighorn mountains 394 



, Black Hills region 383 



, Hartville uplift 408 



, Laramie range 402 



, Rocky Mountain Front range 413 



Allegheny plateau in Pennsylvania, Potts- 

 ville formation in 50-64 



Alpha coal beds, Synonymy of 205 



Alton coal beds, Occurrence of 56 



, Stratigraphie equivalent of 57 



, Synonymy of. : 205 



— group, Stratigraphie equivalent of. 57 



Amherst island, Ontario, Topography and 



water depths near 232-233 



Ammonoosuc district, Argillites of. 474-476 



, Conglomerate in 471-474 



, Contact phenomena in 467-469 



, Fossiliferous area in 463-465 



, Fossils of. 462-465, 480-482 



, Geologic sections in 464 



— — , Hornblende rocks of 467 



, Igneous rocks of 465-467 



, Limestones in ; 469-471 



, Lisbon-Swiftwater complex in 476-478 



, Map of. 479 



of New Hampshire, New studies in, 



Paper on, by C. H. Hitchcock 461-482 



Amsden formation, Character and extent 



of 394, 396-397 



Anderson, F. M.; Stratigraphy of the south- 

 ern Coast ranges of California [ab- 

 stract] 579-580 



Anderson, Lieut. Col., Acknowledgments to. 212 



Anderson formation, Correlation of. 282 



, Occurrence of, in Tennessee 142 



Andrews, E. B m cited on Pottsville formation 



in Ohio 86, 87, 88, 89, 90, 91, 92 



Annual address of the President, S. F. Em- 

 mons 1-28 



Ansted, D. F., cited on Pottsville formation 



in West Virginia 165 



Ansted, West Virginia, Section at 176 



Anthracite coal fields, Coal beds of. 43-49 



, Location and extent of. 39-40 



, Pottsville formation in 39-50, 210 



, Sections in ■ 43-45, 47, 49-54 



Appalachian basin, Carboniferous system 



of 37-210 



— coal field, Geologic history of, during 



Pottsville stage 280-282 



— Pottsville, Deposition of. , 267-282 



Archean rocks, Bighorn mountains 394 



, Laramie range 402 



, Rocky Mountain Front range 413 



Arkansas River valley, Columnar sections 



in 379,437 



, Cretaceous rocks in 431 



Armstrong creek, West Virginia, Section 



on 165-166 



Page 

 Arno coal bed, Occurrence of, in West Vir- 

 ginia 163 



Ashburner, C. A., Acknowledgments to 40 



— , cited on Pottsville formation. 49, 51, 56 65-66 



Astonville, Pennsylvania, Section near 55 



Atlantic border region, Map of 483 



Atlantosaurus beds, Character and extent 



of. 388-389 



. See also Morrison formation. 



Atmosphere, Origin of, under planetesimal 



hypothesis 245-247 



Aubuisson de Voisins, J. F. d', Influence of 

 volcanoes of Auvergne on views of, as 



to origin of basalt 12 



Auditing Committee, appointment of 531 



, Report of, adopted 557 



Badito formation, Character and extent of.. 424 



— — , Correlation of 416, 441 



Bain, H. F., cited on Dakota and succeed- 

 ing formations 572 



-, Thickness of the Benton formation.. 572 



— , and Grant, U. S., Title of paper by 558 



Balsam lake, Ontario, Features of 225 



Banner coal beds, Occurrence of, in Vir- 

 ginia 150 



Barbour, Erwin H. ; Memoir of Wilbur 



Clinton Knight 544-549 



Barr£, , Reference to 484 



Barren Fork coal bed, Synonymy of. 206 



Basin of the Po river [abstract] ; George L. 



Collie 566-568 



Basin ranges, Nevada, Discussion of sec- 

 tions across 328-334 



Basin Range structure of the Humboldt re- 

 gion; G. D. Louderback 289-346 



Bauer, George, Mineralogic work of. 5 



— , Views of, concerning genesis of ores 6 



Bear canyon, Colorado, Cretaceous rocks in. 430 

 Bearwallow formation, Occurrence of, in 



Virginia 153, 154 



, Synonymy of 206 



Beaver creek, Colorado, Section on 421-422 



Beaver creek, West Virginia, Section on 179 



Beaver Meadow, Pennsylvania, Coal beds 



in 48 



basins, Pennsylvania, Pottsville for- 

 mation in 42 



Beaver valley, Wyoming, View in 388 



Becher, J. J., Views of, on ore deposition.. 7 

 Beck, Richard^ cited on bibliography of ore 



deposition 28 



Becker, G. F., reference to study of Com- 



stock lode by 21, 22 



Becquerel, A. C, reference to mineralogical 



experiments of 17 



Bedford coal bed, Synonymy of 205 



Bee rock, Occurrence of, in Virginia.... 148, 151 



, Synonymy of 206 



. See also Rockcastle sandstone. 



Bell, , cited on localities of molybden- 

 ite 285 



Bell, Robert, Record of remarks by 575 



— , Resolution of thanks offered by 579 



Belle Fourche river, Cretaceous rocks on.. 391 

 Belmore colliery, Pennsylvania, Coal beds 



at 47 



Benton formation, Character and extent of... 383 

 391-392, 394, 399-400, 402, 405, 408, 411, 430-431 



444-446, 573, 574 



(619) 



