60 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 162. 
466 Lakes (Arthur). The El Paso coal field [Colorado]. 
Mines and Minerals, vol. xviii, pp. 483-484, 2 figs., 1898. 
Describes the occurrence of coal north of Colorado Springs, Colorado. 
467 The fluorine mine [Cripple Creek, Colorado.]. 
Mines and Minerals, vol. xviii, pp. 489-491, 7 figs., 1898. 
Describes the occurrence of the igneous rocks of the region and the 
occurrence of gold. 
468 Ore occurrence in the Red Mountain district, Colorado. 
Mines and Minerals, vol. xviii, pp. 513-514, 1898. 
Describes the occurrence of the silver and copper ores of the region. 
469 Tellurium and the telluride ores. 
Mines and Minerals, vol. xviii, pp. 533-535, 1 fig., 1898. 
Describes the general characters of the telluride ores of Colorado. 
470 A peculiar ore body. 
Mines and Minerals, vol. xviii, p. 558, 1898. 
Quotes a description of the Ann Lee Mine, Cripple Creek, Colorado, 
by R. A. F. Penrose, jr. 
471 Ores of the Vulcan mine [Colorado], 
Mines and Minerals, vol. xviii, pp. 562-563, 1 fig., 1898. 
Describes occurrence of gold ores in Gunnison County, Colorado. 
472 Mount Caribou gold deposits [Idaho] 
Mines and Minerals, vol. xix, pp. 55-56, 2 figs., 1898. 
Describes the occurrence and origin of the ore deposits 
473 The Wyoming oil fields. 
Mines and Minerals, vol. xix, p. 80, 1 fig., 1898. 
Describes the occurrence of oil in the Salt Creek field. 
474 Landes (Henry). The Deu Pree lode, Washington. 
Eng. and Mg. Jour., vol. lxv, pp. 39-40, 3 figs., 1898. 
Describes the occurrence of gold in the Cascade range of Washington. 
475 Lane (A. C). Magmatic differentiation in the rocks of the copper- 
bearing series. 
Abstracts, Science, new ser., vol. viii, p. 465 (i p.) ; Am, Geol., vol. xxii, 
p. 251 (i p.), 1898. 
476 — - Note on a method of stream capture. 
Abstracts. Science, new ser., vol. viii, p. 465 (ip.) ; Am. Geol., vol. xxii, 
p. 252 (i p.), 1898. 
477 Lawson (William), Ellis (W. Hodgson) and. Chemical notes on 
the so-called Sudbury coal | Ontario]. 
See Ellis (W. H. ) and Lawson (W.), No. 252. 
478 lie Conte (Joseph). [Contributions to "A symposium of the 
classification and nomenclature of geologic time divisions.]" 
Jour, of Geol., vol. vi, pp. 337-338, 1898. 
