Feeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 101 
Richards (Ralph W.). 
L A new habit for chalcopyrite. 
Tufts Coll. Studies, no. 8, pp. 383-385, 1 fig., 1904; Am. Jour. Sci., 4th ser., 
vol. 17, pp. 425-426, 1 fig., 1904. 
Describes occurrence and crystallographic features. 
Richardson (George Burr). 
L Indiana Folio, Pennsylvania. 
TJ. S. Geol. Surv., Geol. Atlas of U. S., folio no. 102, 1904. 
Describes physiographic features, the character, occurrence, and relations of 
Carboniferous strata, and general geologic structure, the character and occur- 
rence of the coals, natural gas, and other economic resources. 
I. Report of a reconnaissance in trans-Pecos Texas, north of the Texas 
and Pacific Railway. 
Tex. Univ., Min. Surv., Bull. no. 9, 119 pp., 11 pis., 4 figs., 1904. 
Describes the topography, the character, occurrence, and geologic relations of 
pre-Cambrian, Cambrian, Ordovician, Silurian, Carboniferous, Triassic, 
Jurassic, Cretaceous, and Quaternary deposits, the mineral recources, and 
underground water supply of the region. 
J. The stratigraphic sequence in trans-Pecos Texas, north of the Texas 
and Pacific Railway. 
Abstract: Science, new ser., vol. 19, pp. 794-795, 1904. 
Rickard (Forbes). 
. Copper deposits in Sinaloa and southern Sonora [Mexico]. 
Eng. & Mg. Jour., vol. 78, pp. 97-98, 4 figs., 1904. 
Describes the occurrence, geologic relations, and economic development of 
copper ore deposits in this part of Mexico. 
J. Notes on tungsten deposits in Arizona. 
Eng. & Mg. Jour., vol. 78, pp. 263-265, 2 figs., 1904. 
Describes the general geology of the Little Dragoon mountains in Arizona, 
and the geologic relations, occurrence, character, and mining of the deposits 
of tungsten ores. 
Rickard (T. A.). 
L Copper mines of Lake Superior. 
Eng. &Mg. Jour., vol. 78, pp. 585-587, 625-627, 665-667, 705-706, 745-747, 
785-787, 825-827, 865-867, 905-907, 945-950, 985-987, illus., 1904. 
I Includes a description of the general geology of the region, the character and 
occurrence of the copper-ore deposits, and the mining operations. 
Ries (Heinrich). 
II . Notes on mineral developments in the region around Ithaca [New 
York] = 
N. Y. State Mus., 56th Ann. Rept., pp. rl07-rl08, 1904. 
Gives notes on the occurrence of economic materials and a geological section 
of a deep well. 
lt |£. Note.s on recent mineral developments at Mineville [New York]. 
N. Y. State Mus., 56th Ann. Rept., pp. rl25-rl26, 1904. 
Brief notes on the occurrence and production of iron ore at this locality. 
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