INDEX TO VOLUME XVIII 787 



PAGE 



Sauropod Dinosaur in the Trinity Cretaceous of Oklahoma, The Occur- 

 rence of a. By Pierce Larkin ....... 93 



Seismischen Strorungen, Katalog der im Jahre 1905 registrierten. By 



Siegmund Szirtes. Review by W. H. H. . . . . . 197 



Seismische Untersuchungsplatte, Eine neue. By C. Mainka. Review 



by W. H. H. . 197 



Seismogramme des japanischen Erdbebens am 21. Januar 1906. By 



Siegmund Szirtes. Review by W. H. H. . . . . . 197 



Seismological Notes. By Harry Fielding Reid. Review by W. H. H. 195 



Shaler, Millard K., and Sydney H. Ball. A Central African Glacier of 



Triassic Age .......... 681 



Shelton, H. S. The Age of the Earth and the Saltness of the Sea . 190 



Shimek, B. The Genesis of Loess a Problem in Plant Ecology. Review 



by T. C. C 294 



. The Loess of the Paha and River-Ridge. Review by T. C. C. 294 



. Aftonian Sands and Gravels in Western Iowa. Review by 



T.C.C 294 



Similkameen District, British Columbia, Preliminary Report on a 



Part of the. By Charles Camsell. Review by E. R. L. . . 286 



Sklerometer, Ein neues. By A. L. Parsons. Review by W. T. Schaller 579 



Smith, Eugene Allen. Cretaceous-Eocene Contact .... 430 



Smith, James Perrin. The Geologic Record of California . . 216 



Smith, Warren D. A Geological Reconnaissance of the Island of Min- 

 danao and the Sulu Archipelago. Review by R. T. C. . lor 



Soil Fertility and Permanent Agriculture. By Cyril G. Hopkins. 



Review by J. Paul Goode . . . • 5^5 



Solution of Gold in the Surface Alterations of Ore Bodies, The. By 



Albert D. Brokaw . .321 



Spitz, Albrecht. Basische Eruptivgesteine aus den Kitzbiichler Alpen. 



Review by Albert Johannsen . . . . . . .580 



Stauffer, Clinton R. The Middle Devonian of Ohio. Review by C. S. P. 474 



Steidtman, Edward. The Secondary Structures of the Eastern Part of 



the Baraboo Quartzite Range, Wisconsin . . . .259 



Sur 1 'existence a la Cote d'lvoire d'une serie petrographique compa- 

 rable a celle de la charnockite. By A. Lacroix. Review by F. C. 

 Calkins 479 



Szirtes, Siegmund. Katalog der im Jahre 1905 registrierten seismischen 



Storungen. Review by W. H. H. . . i97 



. Seismogramme des japanischen Erdbebens am 21. Januar 



1906. Review by W. H. H . 197 



. Unifilares Horizontalpendel. Review byW.H.H. 197 



Tarr, Ralph S., and Bert S. Butler. The Yakutat Bay Region, Alaska. 



Review by E. R. L -571 



