WEEKS.] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
69 
Economic geology— Continued. 
Miscellaneous discussions— Continued. 
Occurrence of ore chutes, Kirby, 3185. 
Occurrence, origin, and composition of chro- 
mite, Pratt, 4441, 4451. 
Onyx marbles, De Kalb, 1480, 1481. 
Onyx marbles, Merrill, 3958. 
Ore deposits and inclosing walls, relation 
between, Fairbanks, 1737. 
Ore deposits and inclosing walls, relation 
between, Lindgren, 3518. 
Ore deposits, classification of, Kemp, 2970. 
Ores in lodes, persistence of, Blake, 455. 
Ores in lodes, persistence of, Blandy, 484. 
Ores in lodes, persistence of, Rickard, 4591. 
Origin of anthracite, Keyes, 3060. 
Origin of bitumens, Peckham, 4289. 
[Origin of ore deposits], Argall, 118. 
[Origin of ore deposits], Guiterman, 2204. 
[Origin of ore deposits] Hills, 2593. 
[Origin of ore deposits] , Pearce, 4268. 
[Origin of ore depositsj, Rickard, 4593. 
Origin of the Pennsylvania anthracite, Ste- 
venson, 5219. 
Origin of loess, Udden, 5510. 
Origin of loess of Mississippi Valley, Cham- 
berlin, 830. 
Origin of ore deposits, Kemp, 2998. 
Origin of salt, gypsum, and petroleum, Hub- 
bard, 2797. 
Outline of views on the origin of ore deposits, 
Kemp, 2999. 
Ozark uplift and ore deposits, Ha worth, 2378. 
Peat deposits, Shaler, 4924. 
Petroleum, geology of, Topley, 5442. 
Petroleum, origin of, Ross, 4666. 
Petroleum, Oliplmnt, 4136. 
Petroleum and natural gas, Sadtlcr, 4725. 
Petroleum in cavities of fossils, Phillips, 1366, 
Pittsburg coal bed, White, 6060. 
Placers of North America, Lakes, 3309. 
Phosphate chemistry, Chatard,877. 
Phosphates, natural, Wills, 6262. 
Phosphoric, acid, minerals containing 1 per 
cent of, Phillips, 4369. 
Precious-metal industry, Emmons, 1686. 
Properties of building stones, Buckley, 657. 
Public lands and their water supply, Newell, 
4085. 
Quicksilver ore deposits, Becker, 333. 
Recent discussions in geology, Dawson, L443. 
[Relation of deformation to ore deposition], 
Chamberlin,805. 
Relation of deformation to ore deposition, 
Kemp, 2980. 
Remarks on loess Sardeson, 4807. 
Review on titaniferous magnetites, Kemp, 
3015. 
Side light upon coal formation, Gresley, 2181. 
Sodium carbonate in the Great Basin, Knapp, 
3198. 
Stone, Day, 1465, 1466. 
Subclassification of zenogenous ore deposits, 
Hastings, 2330. 
Superficial alteration of ore deposits, Penrose, 
4346. 
Superficial alteration of ore deposits, Ray- 
mond, 4558. 
Economic geology— Continued. 
Miscellaneous discussions— Continued . 
Structural geology, Edman, 1613. 
The clay-working industry of the Pacific 
coast States, Ries, 4635. 
The lixiviation of gold deposits by vegetation, 
Lungwitz, 3594. 
The origin, properties, and uses of shale, Ries, 
4636. 
Theory of the loess, Shimek, 4955. 
Tin deposits of Durango, Mexico, Kempton, 
3023. 
Trans-Mississippian coals, Keyes, 3158. 
Treatise on ozokerite, Gosling, 2071. 
True fissure vs. shearage zone veins, Lakes, 
3364. 
Uranium and its ores, Ohly, 4134. 
Vein walls, Rickard, 4598, 4601. 
Western interior coal field, Bain, 208. 
What is bitumen, Peckham, 4291. 
Wide distribution of gold, Lakes, 3356. 
Witwatersrand banket, Becker, 340. 
Alabama. 
A labama and Georgia gold fields, Brewer, 564, 
567. 
Alabama barite, McCalley, 3814. 
Alabama gold mining, Smith, 5016. 
Alabama gold ores, Brewer, 558. 
Alabama's resources of Portland cement, 
Smith, E. A., 5011. 
Appalachian gold fields, Phillips, 4374. 
Arbacoochee gold district, Alabama, Brewer, 
560. 
Auriferous quartz bodies in Alabama, Brewer, 
;.7l'. 
Bauxite, Hayes, 2406, 2415. 
Bauxite, Alabama, McCalley, 3812. 
Bauxite mining, McCalley, 3813. 
Bauxite, Warwhoop, Brewer, 555. 
Brown ore deposit, Phillips, 4376. 
Brown ore deposit of Baker Hill, Brewer, 554. 
Clay resources, Smith, 5017. 
Clays of Alabama, Ries, 4637a. 
Coal field, Coosa, Brewer, 557. 
Coal Measures of Blount Mountain, Gibson, 
1977. 
Coosa coal field, Alabama, Gibson, 1979. 
Coosa Valley region, McCalley, 3818. 
Copper mining in Alabama, Brewer, 573. 
Fluxing rocks of Alabama, McCalley, 3820. 
Gadsden folio, Hayes, 2422. 
Geological relations of clays, Smith, 5019. 
Geological relations of tin southern Appa- 
lachian bauxite deposits, Hayes, 2421. 
Gold belt of Alabama, Phillips, 4367. 
Gold fields of the South, Brewer, 574. 
Gold mining districts, Alabama, Brewer, 556. 
Gold mining in Alabama, Brewer, 565. 
Gold mining in the Appalachians, Nitze and 
Wilkens, 4109. 
Gold ores in Alabama, Phillips, 4373. 
Gold regions of Alabama, Phillips, 4375. 
Gold regions of Georgia and Alabama, Brewer, 
563. 
Hematites of Alabama, McCalley, 3819. 
Iron mines in Jefferson County, Castleman, 
777. 
