148 
Petrology — Continued. 
Rocks described — Continued. 
Porphyry, Keyes, Nos. 386, 402. 
Proterobase, Terrier, No. 221. 
Pyroxene-epidote-scbist, Brooks, No. 83. 
Pyroxene-syenite, Turner, No. 675. 
Pyroxenite, Kemp, No. 372. 
Pyroxenite, Turner, No. 675. 
Quartzite, Ferrier, No. 221. 
Quartzite, Kemp, No. 372. 
Quartz-alunite rock, Cross, No. 149. 
Quartz-augite-diorite, Ferrier, JSIo. 221. 
Quartz-augite-diorite, Turner, No. 675. 
Quartz-diabase, Brooks, No. 83. 
Quartz-diorite, Brooks, No. 83. 
Quartz-diorite, Cushing, No. 154. 
Quartz-diorite, Turner, No. 675. 
Quartz-diorite-porphyry, Turner, No. 675. 
Quartz-mica-diorite, Ferrier, No. 221. 
Quartz-mica-diorite, Turner, No. 675. 
Quartz-mica-porphyrite, Ferrier, No. 221. 
Quartz-porphyrite, Lindgren, No. 348a. 
Quartz-porphyry, Bascom, No. 40. 
Quartz-porphyry, Turner, No. 675. 
Quartz -porphyry, Weed and Pirsson, No. 723. 
Quartz-schist, Clements, No. 130. 
Quartz-syenite, Weed and Pirssou, No. 724. 
Quartzless porphyry (Orthophyre), Ferrier, 
No. 221. 
Bhyolite, Cross, No. 149. 
Bhyolite, Kemp, No. 372. 
Bhyolite, Turner, No. 675. 
Bhyolite, Weed and Pirsson, No. 723. 
Sandstone, Hopkins, No. 343. 
Sandstone, Kemp, No. 372. 
Saussuritic rock, Ferrier, No. 221. 
Schist, Cushing, No. 154. 
Schist, Kemp, No. 372. 
Schist, Luquer and Pies, No. 456. 
Sericite-schist, Clements, No. 130. 
Serpentine, Clements, No. 130. 
Serpentine, Fairbanks, No. 206. 
Serpentine, Kemp, No. 372. 
Serpentine, Lindgren, No. 348a. 
Serpentine, Rand, No. 564. 
Serpentine, Turner, 675. 
Shonkinite, Weed and Pirsson, No. 724. 
Slate, Adams, No. 2. 
Slate, Kemp, No. 372. 
Soapstone, Kemp, No. 372. 
Spherulite rock, Smith, No. 627. 
Syeuite, Cross, No. 149. 
Syenite, Ferrier, No. 221. 
Syenite, Kemp, No. 372. 
Syenite, Keyes, No. 402. 
Syenite, Turner, No. 676. 
Syenite-gneiss, Gordon, No. 250. 
Talc, Smyth, Nos. 637, 638. 
Talc-schist, Turner, No. 675. 
Theralite, Wolff, No. 772. 
Trachyte, Cross, No. 149. 
Trachyte, Kemp, No. 372. 
Trachyte, Ordonez, No. 524. 
Trachyte, Weed and Pirsson, No. 724. 
Tuff, Bascom, No. 40. 
Tuff, Enuuoua, Cross, and Eldridge, No. 202. 
Petrology — Continued. 
Rocks described — Continued. 
Tuff, Ferrier, No. 221. 
Tuff, Weed and Pirsson, No. 723. 
Uralite-diabase, Lindgren, No. 348a. 
Hralitc-diorite, Turner, No. 675. 
Uralite-gabbro, Turner, No. 675. 
Volcanic ash, Salisbury, No. 595. 
Volcanic ash, Winchell and Grant, No. 706. 
Volcanic breccia, Ferrier, No. 221. 
Vogoite, Weed and Pirsson, No. 724. 
Physiographic geology. 
Bearing of physiography on unii'ormatarian- 
ism, Davis, No. 169. 
Briceville folio, Keith, No. 368. 
Buckhannon folio, Taff and Brooks, No. 657. 
Characteristics of the Ozark Mountains, 
Keyes, No. 382. 
Drainage modifications, Campbell, No. 97. 
Expedition to Seriland, McGee, No. 465. 
Finlay and Omenica rivers, McConnell, No. 
462." 
Florida elevated reef, Agassiz, No. 9. 
Franklin folio, Darton, No. 163. 
Gadsden folio, Hayes, No. 301. 
Geographic evolution of Cuba, Spencer, No. 
642. 
Geographic relations of the three Americas, 
Hill, No. 315. 
Geologic reconnaissance in Oregon, Diller, No. 
183. 
Geologic section along New and Kanawha 
rivers, Campbell and Mendenhall, No. 99. 
Geology of Appanoose County, Bain, No. 26. 
Geology of Boone County, Beyer, No. 59. 
Geology of Cuba, Hill, No. 313. 
Geology of Denver Basin, Emmons, Cross, and 
Eldridge, No. 202. 
Geology of Digby Neck, Nova Scotia, Bailey, 
No. 22. 
Geology of Fort Piley reservation, Hay, No. 
297. 
Geology of Jones County, Calvin, No. 89. 
Geology of Ottawa canal, Ells and Barlow, 
No. 196. 
Geology of Missouri crystalline area, Keyes, 
No 381. 
Geology of southern Florida, Griswold, No. 
262. 
Geology of Warren County, Tilton, No. 665. 
Geology of Washington County, Bain, No. 24. 
Geology of Woodbury County, Bain, No. 25. 
Glacial deposits of Alberta, Dawson, No. 175. 
Glaciated area of Kansas, Swein, No. 656. 
Granites and porphyries of the Ozarks, Keyes, 
No. 386. 
Great Valley of California, a criticism of the 
theory of isostasy, Bansome, No. 565. 
Higginsville sheet, Winslow, No. 768. 
Iron Mountain sheet, Winslow, Haworth, and 
Nason, No. 77. 
Kamloops sheet, British Columbia, Dawson, 
No. 174. 
Local deformation in Kansas, Haworth, No. 
294. 
Loudon folio, Keith, No. 366. 
