272 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Stratigraphic (general )— Continued. 
Tables of geologic formations — Continued. 
Virginia, Cambrian and Ordovician : 
Bassler, 158. 
coastal plain : Clark and Miller, 489. 
West Virginia : Grimsley, 1044. 
Panhandle : Grimsley, 1046. 
Steubenville quadrangle : Griswold 
and Munn, 1048. 
Wisconsin : 809. 
Lancaster and Mineral Point quad- 
rangles : Grant and Burchard, 
1021. 
north-central : Weidman, 2512. 
Wyoming, Bald Mountain and Dayton 
quadrangles : Darton, 645. 
Bighorn basin : Fisher, 873. 
Bighorn Mountains : Darton, 644, 
647. 
Carbon County : Veatch, 2440. 
Cloud Peak and Fort McKinney 
quadrangles : Darton, 646. 
Cretaceous and Tertiary : Veatch, 
2439. 
Uinta County : Schultz, 2151 ; 
Veatch, 2431. 
Strontium. 
United States: 2419. 
Structural materials. 
United States: 2419. 
Study and teaching. See Educational. 
Subsidence. See Changes of level. 
Sulphur. 
California : Aubury, 87. 
Louisiana : Baldacci, 117. 
Mexico, Durango : Villarello, 2459. 
Sierra de Banderas : Bose, 260. 
Nevada, Silver Peak quadrangle : 
Spurr, 2271. 
Texas: Baldacci, 117. 
United States : 2418, 2419. 
Utah, Cove Creek beds : Lee, 1543. 
Wyoming : Trumbull, 2395. 
Surveys. 
Canada, topographic survey needed : 
Adams, 7. 
Canadian department of mines : Lamb, 
1482; Tyrrell, 2404. 
Federal Government, relation to the 
mining industry : Hayes, 1108. 
Florida, organization and plans : Sel- 
lards, 2171. 
State geologist's report, what it should 
contain : Bain, 105 ; Clark, 480 ; 
Clarke, 495 ; Leonard, 1561 ; 
Perisho, 1905. 
U. S. Geological Survey : Comstock, 
564 ; Smith, 2250. 
cooperation with state mining bu- 
reaus : Walcott, 2469. 
policy : Branner, 288. 
relations to other geological surveys : 
Walcott, 1265. 
report of Director : Smith, 2235 ; 
Walcott, 2471. 
Tables of geologic formations. See under 
Stratigraphic, 
Talc. 
California : Aubury, 87. 
New York, northern : Brinsmade, 293. 
United States: 2418, 2419. 
Virginia : Watson, 2493. 
Tantalum. 
United States, 2419. 
Technique. 
Cleaning fossils with caustic potash : 
Bose and Vigier, 269. 
Crystal drawing, Stober's method : 
Rogers, 2084. 
Crystallography, teaching of : Kraus, 
1425 ; Rogers, 2083. 
Determination of — 
calcium and magnesium in rocks : 
Knight and Wheeler, 1414. 
feldspars : Wright, 2646. 
geometrical constants of a crystal 
from its interfacial angles : 
Moses, 1774. 
hardness of minerals : Kip, 1403. 
magnesia, in the field : Catlett, 446. 
minerals, by petrographic methods r 
Tomlinson, 2383. 
by the polarizing microscope : 
Rogers, 2082. 
Drawing of crystals from stereo- 
graphic and gnomonic projec- 
tions : Penfield, 1890. 
Etching meteorites for photographic 
purposes : Preston, 1953. 
Geologic mensuration : Harris, 1078. 
Gnomonic projection : Penfield, 1890 ; 
Rogers, 2085. 
Interference figures, observation of, by 
the microscope : Wright, 2647. 
Magnesia, field test for : Catlett, 446. 
Microscopic examination of opaque 
minerals : Campbell, 406, 407. 
Natural molds of fossils, impressions 
of: Slocum, 2220. 
Optic axial angle of minerals, meas- 
urement of: Wright, 2653. 
Optical study of the lime-silica series 
of minerals : Wright, 2649. 
Photographing sutures of Ammonites : 
Bose, 268. 
Temperature. 
Earth's : See, 2161. 
Tennessee. 
General. 
Gulf embayment area : Glenn, 969. 
Economic. 
Barite and fluorite : Watson, 2488. 
Barytes, Cocke County : Weller, 2514. 
industry : Judd, 1331. 
Cement, Cumberland Gap district r 
Eckel, 766. 
Claiborne and Union counties : Clarke, 
503. 
Clays of western Tennessee : Crider, 
596 
