268 BIBLIOGKAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Rocks, structural features — Continued. 
Stretched pebbles from Ocoee conglom- 
erate of Georgia : McCallie, 
1641. 
Rutile. 
Virginia : Catlett, 445 ; Watson, 2492. 
2493. 
St. Christopher. 
Mineralogy. 
Anortbite: Fels, 857. 
St. Lucia. 
Soufriere : Hovey, 1221. 
St. Vincent. 
Eruptions : Deckert, 699 ; Geinitz, 936 ; 
Lacroix, 1448. 
Soufriere, eruption of : Anderson, 48. 
Salt. 
California : Bailey, 95. 
Ohio : Bownocker, 278. 
United States: 2418, 2419. 
Virginia : Watson, 2493. 
Sand. See also Glass sand, Silica. 
United States: 2418, 2419. 
Virginia: 2493. 
Sand-lime brick. 
Ohio : Peppel, 1903. 
United States: 2419. 
West Virginia : Grimsley, 1044. 
Sandstone. See also Building stone. 
Iowa : Beyer and Williams, 234. 
United States: 2418, 2419. 
Santo Domingo. 
Amber : Sample, 2118. 
Gold mining : Garrison, 930. 
San Christobal district, copper : Garri- 
son, 932. 
Sapphires. 
Idaho: Bell, 198. 
Saskatchewan. 
Economic. 
Coal fields : Dowling, 737. 
Sedimentation. See also Erosion. 
Alluvial changes in southwestern Iowa : 
Todd, 2379. 
Bermuda Islands : Verrill, 2445. 
Cave-sandstone deposits : Purdue, 1967. 
Coal, rate of deposition : Ashley, 75. 
Conglomerate, types of : Mansfield, 
1675. 
Cross-bedding : Grabau, 998. 
Delta of the Mississippi : Hilgard, 
1146; McBeth, 1638. 
Deposition of coal, rate of : Ashley, 
75. 
Detrital slopes on mountains of the 
Southwest: Blake, 242. 
Experiments : Jaggar, 1283. 
Mauch Chunk shale : Barrell, 150. 
Red clay, composition of : Clarke, 491. 
River deposits and climate : Barrell, 
151. 
River sediment : McGee, 1663. 
Roxbury conglomerate : Mansfield, 
1674. 
Sedimentation— Continued. 
Sedimentary overlap, types of : Gra- 
bau, 993. 
Schoharie Valley, New York : Gra- 
bau, 991. 
Sedimentation, continental, littoral, 
and marine, relative geological 
importance of : Barrell, 148. 
Sedimentation and drainage : Dap- 
pert, 641. 
Soda spring: Eddy, 771. 
Travertine deposit in Indiana : Wil- 
son, 2607. 
Selenium. 
United States : 2419. 
Shore-lines. See also Beaches, Terraces. 
Labrador : Fuller, 914. 
Lake Erie basin : Fairchild, 836. 
Wisconsin, eastern : Goldthwait, 975. 
Silica. 
Illinois: Bain, 111. 
Virginia : Watson, 2493. 
Silurian. For Lower Silurian see Ordovician. 
Stratigraphy. 
Alaska, southeastern : Kindle, 1400. 
upper Yukon : Brooks and Kindle, 
321. 
Arkansas, northern : Purdue, 1970. 
California, eastern : Ball, 120. 
Franklin: Low, 1623. 
Illinois : Weller, 2517, 2524. 
Calhoun County : Weller, 2523. 
Indiana : Greene, 1030. 
Indian Territory, Muscogee quadran- 
gle : Taff, 2332. 
Iowa : Beyer and Williams, 234 ; Cal- 
vin, 387. 
Bremer County : Norton, 1805. 
Clayton County : Leonard, 1559. 
Jackson County : Savage, 2128. 
Lancaster quadrangle : Grant and 
Burchard, 1021. 
Winneshiek County : Calvin, 388. 
Kentucky, east-central : Foerste, 884. 
Maine, Penobscot Bay quadrangle : 
Smith ct <//., 2241. 
Maryland : Clark and Mathews, 488. 
Montana, Philipsburg quadrangle : 
Emmons, 806. 
Nevada, southwestern : Ball, 120. 
New Brunswick : Ells, 784. 
New Mexico : Gordon and Graton, 983. 
New York: Brown, 333. 
Buffalo quadrangle : Luther, 1633. 
Indian Ladder section : Prosser, 
1961. 
Oneida conglomerate : Grabau, 992 ; 
Hartnagel, 1083. 
Ontario section : Hartnagel, 1082. 
Rochester and Ontario Beach quad- 
rangles : Hartnagel, 1085. 
Schoharie Valley : Grabau, 991. 
Shawangunk conglomerate : Grabau, 
992. 
Shawangunk Mountains : Clarke, 
499. 
