256 J. STANLEY-BROWN INDEX TO VOLUMES 21 TO 30 



Page 



Salts of silver, Occurrence of halogen 21, 791 



Sampaio, Azevkdo, cited on size of ant colonies 31, 455 



Sampaio, Theodoke F., Age of Catiuga limestone of Baliia 22, 198 



Samxjelson, G., cited on organic deposits 28, 740 



San Andreas ridge, New Mexico, Erosional processes in an arid region 



typified by 21, 561 



San Diego County, Fauna of tbe Tejon in 27, 173 



Sand and dust storms of arid regions, Occurrence and character of . . . 21, 584 



Sand-blast, Corrasive efficiency of natural ; Charles Keyes 26. 63 



Sand-chrome deposits of Maryland ; J. T. Singewald, Jr 30, 111 



— dunes, Character of 21, 640 



— erosion from studies in the Libyan desert, Range and rhythmic action 



of ; William H. Hobbs 26, 63 



— grains. Classification of 21, 626, 627 



— -—, Criteria for the recognition of various types of; W. H. Sherzer. . 21,25, 



625-660 

 , Difference between aqiieo-iesidiial and residuo-aqueos 21, 627 



— ■ — , Explanation of plates showing types of 21, 657-660 



, Thesis stated of criteria for the recognition of the various types of 



21, 625, 626 

 , Typical assemblages reveal geological history of 21, 625 



— (gray) of Escambiii County, Florida 21, 635 



Sahara and other deserts, Character of 21, 639 



— type. Concentration 21, 647 



— — , Glacial 21, 628 



— — , Organic 21. 043-647 



— — , Residual 21. 630 



— — , Volcanic 21, 629 



— types, Aqueous 21, 632-638 



, Composition of organic 21, 644 



, Eolian 21, 638-643 



Sandia range, Geologic cross-section of the. Figure showing 21, 556 



Sands, Arabian Desert red 21, 643 



— , Beach, dune, and desert 21, 640 



— containing magnetite, Mechanical analysis of 25, 727 



— , Problem of the Texas Tertiary 26, 447 



Sandstone at the State prison near Carson City, Nevada, Origin of the. 23, 73 



— beds. Absence of water in dry 29, 105 



— , Extent of Berea 26, 209 



— in Ohio, Berea 26, 96, 155, 205-216 



— of the San Jose and Mount Hamilton quadrangles. Thickness of 24, 96 



— , Principle of recognition of sand grains applied to Sylvania 2I, 650 



— , Wind-blown 24. 112 



Sandstones of the delta deposits of North America, Bays, Clinch, Long- 

 wood, and Keef er 24, 446-482 



— in deltas. Stratification of 23, 427 



— of Ontario, Oriskany 23, 83, 371-375 



southeastern Minnesota, Red 21, 30 



