WEEKS ] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
67 
Dynamic geology — Continued. 
Study of natural palimpsests, Grimsley, 2188. 
Styolites, Hopkins, 2740. 
Subaqueous differential weathering, Fuller, 
1919. 
Submerged valleys of California, Davidson, 
1339. 
Subterranean temperatures, Hallock, 2275. 
Surface geology of New Brunswick and Nova 
Scotia, Chalmers, 787. 
Surface gravels of the Carboniferous area, 
Haworth, 2363. 
Summary report, Dawson, 1421. 
Summer camp at Lepreau Basin, New Bruns- 
wick, Matthew, G. F., 3764. 
Systems of vertical faults, Hobbs, 6544. 
Taylorsville region of California, Diller, 1496. 
Telluride folio, Colorado, Cross, 1201. 
Tenmile folio, Emmons, 1712. 
Terrace cutting of the Potomac, Abbe. 2. 
Terrestial submergence southeast of the 
American Continent, Spencer, 5130. 
[Terrestial submergence southeast of the 
American Continent], Walcott, 5793. 
Tertiary and later history of Cuba, Hill, 2544. 
Tertiary baseleveling, Upham, 5585. 
Tertiary changes in southwestern Virginia, 
Campbell, 726. 
Tertiary revolution of the Pacific Coast, Dil- 
ler, 1497, 1500. 
Tertiary volcanoes of Absaroka Range, Wyo- 
ming, Hague, 2238. 
Tetrahedral earth and zone of the Interconti- 
nental seas, Emerson, 1680. 
The bowels of the earth, Lane, 3387. 
The deL>ris-covered mesas of Boulder, Colo- 
rado, Lee, 3445. 
The earth's originally absorbed gases, Lane, 
3383. 
The geothermal gradient in Michigan, Lane, 
3398. 
The lessons of Galveston, McGee, 3881. 
The Newark or New Red sandstone rocks of 
Rockland County, N. Y., Kurnmel, 3285. 
The Ouachita Mountain Range in Indian 
Territory, Taff, 5293. 
The northern Appalachians, Willis, 6202a. 
The Ozark Uplift, Broadhead, 607. 
The peneplain, Daly, 1286. 
The peneplain, Davis, 1387. 
The peneplain, Tarr, 5329 
The structure of Monument Mountain, Dale, 
1253. 
Theory of volcanoes, Rice, 4587. 
Thermometamorphism in igneous rocks, Har- 
ker, 2290. 
Time erosion of Upper Mississippi, Upham, 
5651. 
Tin islands of the Northwest, Claypole, 981. 
Tintic special folio, Utah, Smith, 5032. 
Topographic features east of the Blue Ridge, 
Cobb, 1022. 
Topography, geologic evolution of nonmoun- 
tainous, Hill, 2536. 
Topographic study of the islands of southern 
California, Smith, 5064. 
Torsional theory of joints, Becker, 337. 
Dynamic geology— Continued. 
[Torsional theory of joints] , Boyd, 516. 
[Torsional theory of joints], Raymond, 4554. 
Trap rock of the Palisades, Lyman, 3613. 
Trap sheets, Holyokeand Deerfield, Emerson, 
1667. 
Triassic formation of Connecticut, Davis, 1364. 
Truckee folio, Lindgren, 3534. 
Unconformities of Marthas Vineyard, Wood- 
worth, 6456. 
Underground temperature, Agassiz, 51. 
Upper Peninsular of Michigan, Rominger, 
4664. 
Use of terms " rock weathering," "serpentin- 
ization," and " hydrometamorphism," Mer- 
rill, 3964. 
Uvalde folio, Texas, Vaughan, 5739. 
Vein formation, experiments in, Comstock, 
1060. 
Vein intersections, Underhill, 5544. 
Vein structure, Blake, 453. 
Vein structure, Church, 885. 
Vein walls, Ricard, 4598, 4601. 
Verhaltnisse der Mexico, Felix and Lenke, 
1806. 
Visit to the Bermudas, Agassiz, 52. 
Volcanic craters, Lakes, 3332. 
Volcanic dust and pumice in marine deposits, 
Shaler, 4928. 
Volcanic eruption, in California, Diller, 1493. 
Volcanic phenomena on Hawaii, Hitchcock, 
6543. 
Volcanoes, extinct, Tarr, 5304. 
Vulkane Guatemalas, Sapper, 4790. 
Vulkane Mexikanischen, Sapper, 4792. 
Walsenburg folio, Colorado, Hills, 2599. 
Wartburg folio, Keith, 2965. 
Wasatch Mountains, Emmons, 1690. 
Water biscuit of Squaw Island, New York, 
Clarke, 975. 
Water in the earth's crust, Greenlee, 2164. 
Water supply from artesian wells, New Jer- 
sey, Vermeule, 5752. 
Wave-formed cuspate forelands, Tarr, 5330. 
Wave-like progress of an epeirogenic uplift, 
Upham, 5578. 
Weathering and steam erosion, Tarr, 5318. 
Weathering of diabase, Watson, 5889. 
Weathering of micaceous gneiss, Merrill, 3960. 
West Indian bridge, Spencer, 5158. 
White and variegated clays of the north shore 
of Long Island, Merrill, 3940. 
Wind as a factor in geology, Merrill, 3942. 
Yardley fault, Pennsylvania, Lyman, 3611. 
Economic geology. 
Miscellaneous discussions. 
A bit of iron range history, Winchell, H. V., 
6282. 
Abrasive materials, Parker, 4248. 
A great mining area, King, 3175. 
Aluminum, Hunt, 2806. 
American ornamental stones, Merrill, 3966. 
Artesian wells as a source of water supply, 
Smith, E. G., 5002. 
Asbestos, Merrill, 3953. 
A sketch of the nickel industry, Bain, 215. 
Asphalts and bitumens, Sad tier, 4724a. 
