INDEX TO VOLUME 20 



Page 

 Adams, Frank D., elected First Vice- 

 President 616 



— , Gneisses referred to by 234 



— , Reference to 156, 569, 668, 689 



— (and Alfred E. Barlow), Title of 



paper by 621 



Adirondacks, Pleistocene geology of 



the southwestern slope of the 635 



Agassiz, Louis, Reference to 2 



Aguilera, , Reference to 583,584 



Aftonian and Nebraskan — an adden- 

 dum 408 



— ■ beds in Iowa, Previously known dis- 

 tribution of 399, 400 



-, Evidence of 404-407 



— deposits, Extent of 343-344 



— ■ — , Stratigraphic position of.... 341-342 



— edentata 353 



— fauna, Mammalian 341-356 



— gravels, Investigations by Shimek of. 137 

 — ■ — , Mollusks and mammals of 137 



— horses 344-350 



— interval, Climate of 343 



• in Iowa 136 



, Relation of gravels, in time, to 



the 342-343 



— interglacial with mild climate, The.. 406 

 — ■ mammalian fauna, New material 



of 354-356 



— , Localities of 343-344 



— peat beds of Iowa, Location of. . 399, 400 

 — ■ proboscideans 351-353 



— sand and gravel beds, Description 



of 401-404 



■ — ■ gravel beds of Iowa, Location 



of 400 



■ gravels in western Iowa, Thick- 

 ness and altitude of beds of 403 



— ■ ■ — western Iowa 399-408 



• — — , Stratigraphic position of. . . 



404-406 

 — , T. C. Chamberlin first applied name. 399 



— sands and gravels, Views of... 400-407 



Afton Junction, Fossils from 138 



— , Older drift exposed at 136 



Alaska peninsula, Geologic studies in . . 700 



Albertan drift, Reference to 135 



Alden, William C, Criteria for age of 



glacial drift sheets (abstract) 638 



— , Glacial phenomena of southeastern 



Wisconsin (abstract) 638 



— , Reference to 702 



Algonkian rocks 239 



American Association for the Advance- 

 ment of Science, Titles of papers 

 presented before Section E of. 703-704 

 — 'Journal of Science, Reference to. . . . 410 

 — ■ Museum of Natural History, Refer- 

 ence to 1902, 1903, and 1908 expe- 

 ditions for. . 409, 412, 417, 418, 419, 421 



Ami, H. M., Reference to 430, 473, 



556, 572, 689, 701 



Analyses : Chloropal 263 



— : Diorite dikes 237 



— : Granites 251 



— : Latite-granophyre 257 



— : Ottawa river 161 



— : Piper Peak basalt 258 



— : Quartz-monzonite 251 



— : Rivers 160 



— : Vesuvianite 261 



Andesite of Silver Peak region 257 



Anderson, Robert, Geology of southern 



Japan 797 



— , Reference to 410, 421, 422,' 423, 424 



— , Sedimentary formations of the coal- 

 ing district, California, paper by . . 708 



Appalachian coal areas, Tonnage re- 

 duction of 334 



■ — , Extent of the reduction of the 



productive 334 



— — field, Coal shortage in northern. . . 671 

 — ■ — • fields, Absence of deposits in.... 335 



• — , Duration of 335-336 



, Method of deposition of 335 



— — region, Barren area of 333-334 



Archean formations, Sketch plan of . . . 199 



— time, Reference to early 156 



Arizona and western New Mexico, Re- 

 connaissance along the Santa Fe" 

 railroad in 700 



Arkansas Geological Survey, ; Reference 

 to Annual Report of State Geolo- 

 gist 269 



— , Reference to Geological Survey of.. . 325 

 Aridity, Erosive processes under condi- 

 tions of 621 



— , Influence of 704 



Arlat, , Reference to 434 



Arnold, Ralph, Environment of the 

 Tertiary faunas of the Pacific 



coast 704 



— , Reference to 430, 579, 600 



Artiodactyls of the Aftonian fauna.. 350 



Ashley, G. H., Reference to. . 632 



Atlantic coast formations, Plate show- 

 ing comparative columnar sections. 646 

 Atwood, Wallace W., Geologic studies 



in the Alaska peninsula 700 



Avalanche action, Results from.. 412,413 



Bain, II. Foster, Reference to.... 134, 348 

 400, 401, 407, 522 



Baird, , Reference to 571 



Baltimore meeting, 1908, Register of 

 Fellows and Fellows-elect in at- 

 tendance at 705, 706 



Barlow, Alfred E., Reference to. . 373, 383 

 — ■ (and Frank D. Adams), Title of 



paper by 621 



Barrell, Joseph, Some distinctions be- 

 tween marine terrestrial conglom- 

 erates by 620 



— , cited on influence of earth shrink- 

 age 506-508 



— , Reference to 430, 438, 506, 625, 679 



Barriers, Description of land. . . . 440-442 

 Basal conglomerate of the Esmeralda 



formation 245 



Basalt of Silver Peak quadrangle. 257-258 

 — ■ — Piper peak, Analysis by George 



Steiger 258 



— ■ in Snake River fields, Lava solidified 



into 219 



Bassler, , Reference to 430, 547 



Bastin, Edson S., Reference to 668 



— , Chemical composition as a criterion 

 in identifying metamorphosed sedi- 

 ments (abstract) 667 



Bayley, , Reference to 666, 668 



Beche De La, — — -, Reference to 666 



Beecher, C. E., Reference to 429, 536 



(737) 



