WEEKS.] 
PETROLOGY, AND MINERALOGY FOR 1892-1900. 
77 
Economic geology — Continued. 
Maryland — Continued. 
Harpers Kerry folio, Keith, 2958. 
Maryland building stones, Mathews, 3737. 
Mineral resources of Alleghany County, Md., 
Clark, O'Hara, Rowe, and Ries, 920. 
Nomini folio, Darton, 1314. 
Outline of physical features of Maryland, 
Clark, 912. 
Piedmont folio, Darton and Taff, 1318. 
Potomac and Roaring Creek coal fields, 
Weeks, 5965. 
Properties of building stones, Merrill, 3962. 
Massachusetts. 
Building and road stones, Whittle, 6124. 
Building and road stones of Massachusetts, 
Whittle, 6125. 
Clays of Massachusetts, Whittle, 6123. 
Geology of eastern Berkshire County, Emer- 
son, 1678. 
Geology of Narragansett Basin, Shaler, Wood- 
worth, and Foerste, 4940. 
Geology of Old Hampshire County, Mass., 
Emerson, 1677. 
Glacial brick clays of Rhode Island and Mas- 
sachusetts, Shaler, Woodworth, and Mar- 
but, 4930. 
Holyoke folio, Emerson, 1676. 
Limestone quarries of New York, Vermont, 
Massachusetts, and Connecticut, Ries, 4616. 
Water supply of eastern Massachusetts, Sha- 
ler, 4931. 
Mexico. 
A mineralized dike, Brown, 635. 
Copper mining at Placentas de Nacosari. So- 
nora, Mexico, Layton, 3423. 
El Real del Monti', Ordonez and Rangel, 4152. 
Exploitacion de las minas, Rangel, 4530. 
Free gold in granite, Merrill, 3956. 
Gold fields of Altar, Waring, 5862. 
Gold resources of Mexico, Comely, 1058. 
Gold zone of Copalquin, Durango, Mexico, 
Fowler, 1880. 
Iron ores, hematite and martite, Hill, 2541. 
Iron-producing country, Mexico as an, Hill, 
2538. 
Itinerarios geologicos, Buclna, 661. 
Les filons argentiferes de Pachuca, Ordonez, 
4149. 
Los vetas, Aguilcra and Ordonez, 64. 
Manganese, occurrence of, Halse, 2277. 
Mining and smelting in Durango, Mexico, 
Furman, 1932. 
Mining in Oaxaca, Clark, 890. 
Native sodium carbonate, Blake, 477. 
Natural coke of the Santa Clara coal field, 
Sonora, Mexico, Dumble, 1574. 
New copper deposit, Lukis, 3593. 
Onyx marbles, Merrill, G. P., 3944. 
Quicksilver mines at Huitzuco, Mexico,Halse, 
2281. 
Sierra Mojada, mines of, Fechet, 1804. 
Silver district of Tehuilotepec, Mexico, Halse, 
2280. 
Sinopsis de geologia Mexicana, Aguilera, 61. 
Tin deposits of Durango, Mexico, Ingalls, 
Economic geology— Continued. 
Mexico— Continued. 
Tin ore at Sain Alto, Zacatecas, Halse, 2282. 
Triassic coal and coke of Sonora, Mexico, 
Durable, 1572. 
Michigan. 
Bayport quarries, Benedict, 416. 
Coal basin of Michigan, Lane, 3399 
Coal in Michigan. Holmes, 2716. 
Copper region, Phelps, 4363. 
Crystal Falls iron-bearing district, Clements 
and Smyth, 1017. 
Geology of Lower Michigan, Lane 3388 
Geological report on Monroe County. Michi- 
gan, Sherzer, 4954. 
Geological report on Sanilac County Michi- 
gan, Gordon, 2069. 
Iron-bearing series, Irving and Van Hise, 2869. 
Iron ore, Birkinbme, 78. 
Iron-ore region, Parker, 4251. 
Iron ores of Lake Superior region ; Van Hise, 
5679. 
Iron ores of Marquette district, Van Hise 5681. 
Iron ores of Menominee range, Hulst 2805. 
Lake Superior copper deposits, Wadsworth, 
5770. 
Marquette district, Van Hise and Bayley, 5704. 
Marquette iron district, Michigan, Van Hise 
and Bayley, 5696. 
Marquette range, Jopling, 2938. 
Menominee special folio, Van Hise and Bay- 
ley 5713. 
Michigan mineral waters, Lane, 3395. 
Origin of the native copper in the Michigan 
deposits, Blandy, 488. 
Republic trough, Smyth, 5100, 5102. 
Salt deposits, Ward, 5861. 
Shales of Michigan, Ries, 4637- 
Upper Peninsula of Michigan, Rominger, 4664. 
Water resources of Michigan, Lane, 3390. 
Minnesota. 
Biwabik Mine, Winchell (H. V.) and Jones, 
6280. 
Geologic structure of Vermilion range, Smyth 
and Finlay, 5101. 
Geology of Akeley Lake plate, Grant, 2132. 
Geology of Mesabi range, Grant, 2123. 
Geology of Mountain Iron plate, Winchell, 
6354. 
Geology of Mountain Lake plate, Grant, 2135. 
Geology of Virginia plate, Winchell, 6355. 
Iron-bearing formations, Winchell, N, H., 6290. 
Iron-bearing rocks, Winchell, N. H., 6292. 
Iron-bearing rocks of the Mesabi range, Spurr, 
5166. 
Iron ore, problems of Mesabi, Winchell, N. H. 
6296. 
Iron-ore region, Parker, 4251. 
Iron ores of Minnesota, Winchell, N. H. and 
H. V., 6297. 
Iron ores of the Mesabi range, Spurr, 5165- 
Les mines de fer du Minnesota, Bachellery, 
140. 
Manganese, oxide of, Winchell, N, H., 6303. 
Mesabi iron range, Jennings, 2908. 
Mesabi iron range, Winchell, H. V., 6278, 
Minnesota deep well, Hall, C. W., 2244, 
