284 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Phonolite porphyry, 656. 
Phosphate, 2493. 
Phosphatic rock, 361, 1970. 
Phyro-miaskose, 1935. 
Placerose, 1815. 
Porphyrite, 1199. 
Porphyry, 1193, 1199, 1526. 
Powellite, 2137. 
Prowersose, 159, 603. 
Pseudodiorite, 2242. 
Pulaskite, 739, 743. 
Pulaskose, 614, 616, 1934. 
Purpurite, 1025, 2136. 
Pyrite, 2493. 
Pyrochlore, 2512, 2513. 
Pyroxene, 614, 2512. 
Pyrrhotite, 2493. 
Quartz-augite diorite. 1199. 
Quartz diorite, 1199. 
Quartzite, 1495, 2483, 2512. 
Quartz nodule, 685. 
Quartz porphyry, 1199. 
Red clay, 491. 
Redondite, 1452. 
Rhodusite, 1779. 
Rhyolite, 2240, 2512. 
Riebeckite, 1779, 1935, 2512. 
Riebeckite granite, 1935. 
Salt brine, 278. 
Sand, 1436. 
Sand, dolomitic, 2484. 
Sand, glass, 349, 350, 354, 1436, 1559. 
Sand, molding, 2065. 
Sandstone, 371, 1559, 2031, 2494. 
Schist, muscovite, 1026. 
Selagite, 603. 
Sericite schist, 2320. 
Serpentine, 425, 591, 739, 2494. 
Serpentinoid, 1505. 
Shale, 67, 116, 124, 158, 230, 233, 234, 353, 
598, 766, 1046, 1499, 1559, 1563, 1608, 
2177, 2483, 2512, 2634. 
Silica, 111. 
Sipylite, 2493. 
Sitkose, 1815. 
Slate, 233, 621, 1159, 1495. 
Smithsonite, 2484. 
Soretite, 1779. 
Spessartite, 1934. 
Sphalerite, 2081, 2484. 
Spodumene, 87. 
Stibiotantalite, 1892. 
Strengite, 2493. 
Syenite, 614, 616, 1026, 1934, 2490, 2493, 
2512. 
Syenite porphyry, 1199. 
Terlinguaite, 1161. 
Thorianite, 2418. 
Tinguaite, 739. 
Tonalose, 1815. 
Toscanose, 614, 616. 
Tourmaline, 2136. 
Tracho-umptekose, 1935. 
Trachydolerite, 1026. 
Travertine, 158. 
Tremolite, 1893. 
Troctolite, 2512. 
Tuff, 539, 546. 
Turquoise, 2664. 
Umptekose, 1935. 
TJnakite, 2485, 2493. 
Vogesite, 1026. 
Volcanic ash, 570, 2633. 
Water, 15, 23, 63, 277, 375, 643, 869, 872, 
907, 908, 1046, 1129, 1198, 1499, 1509, 
1526, 1559, 1573, 1610, 1639, 1660, 
2129, 2144, 2194, 2229, 2365, 2537, 
2588. 
Wurtzite, 2081. 
Yamaskite, 2660. 
Yttrocrasite, 1143.. 
Zinc ore, 1911, 2418, 2484, 2493. 
Zinnwaldite, 2136. 
Zoisite, 849, 2242. 
GEOLOGIC FORMATIONS DESCRIBED. 
Abbeville-York zone,»Archean, South Caro- 
lina : Sloan, 2218. 
Accabee gravels, Pleistocene, South Caro- 
lina : Sloan, 2218. 
Adams Lake series, Cambrian, Yukon Teri- 
tory : Brooks, 313. 
Adams Lake series, Canada : Walcott, 2470. 
Adaville formation, Cretaceous, Wyoming : 
Schultz, 2151. 
Admire shales and sandstones, Carbonifer- 
ous, Kansas : Wooster, 2636. 
Aftonian, Quaternary, Iowa : Calvin, 387. 
Agawa formation, Algonkian, Minnesota : 
Abbott, 1. 
Aiken beds, Cretaceous, South Carolina : 
Sloan, 2217. 
Ajibik quartzite, pre-Cambrian, Michigan : 
Lane and Seaman, 1518. 
* Alamito formation, Carboniferous^ New 
Mexico: Keyes, 1377. 
Albany formation, Carboniferous, Texas : 
Ries, 2058. 
Albert shales, Devonian, Canada : Ells, 784. 
Albion schist member, Cambrian, Rhode 
Island : Emerson and Perry, 790. 
Alger formation, Silurian, Kentucky : 
Foerste, 883, 884. 
Alibates lentil, Permian, Texas : Gould, 
987. 
Allegheny formation. Carboniferous, Penn- 
*sylvania : Butts, 368 ; Clapp, 475, 477 ; 
Stevenson, 2294 ; Woolsey, 2634. 
Allegheny formation. Carboniferous, Penn- 
sylvania, Ohio, and West Virginia : (iris- 
wold and Munn, 1048. 
Allegheny formation, Pennsylvanian, Mary- 
land : Clark and Mathews, 448. 
Allegheny series, Carboniferous, West Vir- 
ginia : Grimsley, 1044, 1040. 
Allen limestone, Carboniferous, Kansas : 
Beede and Rogers, 181; Sarle, 2124; 
Wooster, 2636. 
Almy formation, Tertiary, Wyoming: 
Schultz, 2151. 
