18 J. STANLEY-BROWX INDEX TO VOLUMES 21 TO 30 



Page 

 Arnold, Ralph ; General conditious of the petroleum industry and the 



world's future supply 28, IfiO, 603 



— , Oil geology in relation to valuation 30. 9<3 



— , Photograph of natural bridge at Santa ("ruz, California, by 21. 327 



— , and Ci^RK, B. S. ; Marine Oligocene of the West Coast of North 



America 29. 153. 297 



Aerhenius, Svante, cited on cause of glaciation 30. 5r)7 



radio-thermal action 28. 903 



Artesian well (two) records from Hatteras Island; Collier Cobb 23,51 



Arthropoda, Relation to the strand-line of the Paleozoic; John M. Clarke 



22, 94, 279 



Artiodactyla ; O. A. Peterson 23, 86, 162 



Arundel formation, Reptiles of 24. 337 



AscuTNEY Mountain. Vermont, gabbro (with diorite) and dial>ase of. . . 21. 80 

 AsHBURNER, C. A., Reference to letter on organizing a geological society 21. 744 



Ashley, G. H., cited on Pennsylvania oil horizons 28, 648 



— ; Experiment in the graphic presentation of the economic geology of 



bedded deposits 27, 122 



— , Geological work in Tennessee of 25. 168 



- — , Memorial of Albert Homer Purdue by 29, 55 



— ; Physiographic study of the Cretaceous-Eocene period of the Rocky 



Mountain front and Great Plains provinces 26, 105 



— ; Stratigraphic study of the Appalachian and Central States, with ref- 

 erence to the occurrence of oil and gas 23, 37, 725 



— and Blatchley, W. S., Reference to "The lakes of northern Indiana 



and their associated marl deposits" by 27. 360 



AsHOKAN formation 30, 468 



AsHTON schists 25. 440, 442 



Asia and Europe Triassic invertebrate faunas and their relation to the 



American 26, 412 



— , Climatic changes in 25, 480 



— , Correlations between geology of America's west coast and east coast 



of 29. 81 



— , Effects of sun-spots on climate in 25. 549 



— , Extent of the peripheral ranges of 21, 192 



— , Inclosed lakes of 25. 563 



— Minor and Sj'ria, Post-Tertiary history of the lakes of 21, 20, 755 



— , Petroleum supply of 28, 614 



— , Significance of the peripheral mountain areas of 21. 190 



— , Suess' interpretation of the plan of 21, 183-190 



Asphalt beds of McKittrick, California, Occurrence of mammal remains 



in the 26. 167 



Association for the Advancement of Science, Reference to Amei-ican. . 21, 741 



— - of American Geologists, Reference to 21, 740 



Astoria series (Oligocene) in the region of Mount DiaI)lo. middle Cali- 



. fornia ; B. L. Clarke .' 28, 227 



AsuLKAN glacier, Recent changes in the ; Heinrich Ries 24, 71, 696 



Atlantic and Gulf Coastal Plain, Cretaceous-Eocene contact in the. . . 26, 168 



