INDEX TO VOLUME 19 



Page 



Actinopteria, Occurrence of 283 



ACTixiDM, Probable origin of 117 



Adams, F. D., Studies of Laurentian 

 and Hastings districts of the pre- 



Cambrian by 2-4 



— , Title of paper bv 3 



Address of President (C. R. Van Hise).l-28 

 Afghanistan, Similarity of Talchlr 



conglomerates to those of 350 



Africa. Extent of glaciation in.... 348-349 



"Agxotozoic," Use of term 13 



Alaska, Geologic reconnaissance of Por- 

 cupine valley 315-338 



— , Northern, Extent of Carboniferous 



In 335-336 



— , Paleozoic rocks of Upper Yukon re- 

 gion of 255-314 



ALBUQDERQtJE meeting. Register of 578 



— -, New Mexico. Annual meeting held 



at 513 



— • — , Proceedings of annual meeting 



held at 513-600 



— , Tertiary deposits at 67 



Algonkiax serieSj Composition of 18 



— formation, Correlation of 15 



— and Archean formations, Differences 



betvreen 19 



— formation. Grouping of Keweenawan 



and Huronian in 12 



— ■ and Archean formations, Unconform- 

 ity of 17 



— , Use of term 16 



Allixg, a. N., cited on forms of topaz 



crystals 185 



— , Reference to work by 177 



Alps, Interglacial peRods in the 358 



Amhnccelia, Occurrence of 283 



Amherstbdrg bed. Fauna of the. .. 547-551 



Ami, H. M., Discussion by 537, 538, 



539, 556 

 Amsden formation. Location and char- 

 acteristics of 413 



, Fossils and age of 414-415 



AXALTSES : Age of radioactive minerals 134 



— : Argentite 96-97 



— : Buried sea waters 507 



— : Glaucophane schist 150 



— : Giant springs, Montana 343-344 



— : Proustite 95, 96 



— : Red soil of La Plata valley, New 



Mexico 54 



— : RhyoUte tuff 187 



— : Serpentine 150 



— : Smooth opaque topaz 187 



— : Underground waters 504 



Ancient Ice ages, Interglacial periods 



In 359-362 



Anderdon bed. Fauna of the 547 



— exposure. Coral limestone of 542 



— ■ -~, Correlation of beds of 543 



— quarry, Sibley core and other expo- 



sures of 542 



Anderson, a., Title of paper by 576 



Anderson, Robert (and Ralph Ar- 

 nold) ; Conglomerate formed by a 

 mineral-laden stream In Califor- 

 nia 147-154 



Animal bodies. Water In 212. 213 



Animikie series. Stratigraphy of . . . . 10, 11 

 -, Unconformity of Keewatin and. 10, 11 



Page 



Annelida, Classification of 549 



Annual volumes, Contents of 520 



— — , Cost of 519 



Anoplotheca concava, Occurrence of. . . . 283 



Anthozoa, Classification of 547-550 



Appalachian rivers. Erosion of gorges 



of 211 



Archean formation, Differences between 



Algonkian and 19 



— • — .Grouping of Keewatin and Lau- 

 rentian in 12 



— rocks. Areas of 223-225 



— series. Composition of 17, 18 



— . Use of term 13-16 



Archeozoic, Use of term 15 



Argentite, Analysis of 96-97 



— , Occurrence at California mine of. 93-98 

 Argon, Radium emanation resulting In. 118 

 Arid cycle. Characteristics of the 87 



— plains. Foundation of the 64-74 



— regions of America, General charac- 



ter of 91-92 



— ■ — , Eolian erosion in 81-83 



— region. Rock-floor of Interment plains 



of the 63-92 



Arizona, Carrying capacity of sheet- 

 floods of 202 



; — . Detritus in valleys of 70 



Arnold, Ralph (and Robert Ander- 

 son) ; Conglomerate formed by a 

 mineral-laden stream in Califor- 

 nia 147-154 



— . Titles of papers by 576 



Asbestos deposits of the Grand can- 

 yon, Arizona. (Read by title.) . . . 537 



Asia, Arid plains of 86 



— , Extent of glaciation in 348 



Astropolithan hindi. Plates showing. . . 103 

 Atikokan district. Iron-bearing forma- 

 tion In 9 



Atrypa cf. flaiellatd. Occurrence of . . . . 283 

 Atrypa reticularis, Occurrence in De- 

 vonian of Upper Yukon of . . . . 279. 283 

 Aucella crassicollis. Horizon of . . . . 391-392 



— piochi and Aucella crassicollis. Oc- 



currence on Buck peak of 373 



— , Range of the 369 



— , Relation of Unio and 381-382 



Auditors, Appointment of 521 



AUSTR.4.LIA, Desert plains of 86 



— , Extent of glaciation in 349 



— , Interglacial periods in 358, 360 



— , Permo-Carboniferous tillite in. . 350-351 

 Azoic, Meguma series supposed to be. . 100 



Bailev, L. W., cited on fossils of the 



Meguma series 103, 104 



— . Reference to report by Ill 



Bain. F., cited on Permian moraine. 



Prince Edward Island 353 



Banner mine. Oroville, California, 



Quartz veins in 388 



Barbour, E. H., cited on Nebraska 



"loess man" 245 



— , Section from Missouri valley to Gil- 

 der mound obtained by 253 



— . Skulls of Gilder mound described by. 248 



Barlow, A. E.. Title of paper by 3 



Barnett, V. H., Acknowledgments to.. 261 



(601) 



