42 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 162. 
275 Foote (Warren M.). Note on the occurrence of native lead with 
roeblingite, native copper, and other minerals at Franklin 
Furnace, New Jersey. 
Am. Jour. Sci., 4th ser., vol. vi, pp. 187-188, 1898. 
Describes the characters of the material. 
276 Fowke (Gerard). Preglacial drainage in the vicinity of Cincin- 
nati; its relation to the origin of the modern Ohio River, 
and its bearing upon the question of the southern limits of 
the ice sheet. 
Denuison Univ., Sci. Lab., Bull., vol. xi, Art. I, pp. 1-10, pi. i, 1898. 
Describes the origin and geologic history of the Ohio River and the 
southern limit of the ice sheet. 
277 Frazer (Persifor). Notes on the northern Black Hills of South 
Dakota. 
Am. Inst. Mg. Engrs., Trans., vol. xxvii, pp. 204-231, 1898. 
Describes the general geology of the region and the occurrence of the 
gold ores. Includes a bibliography. 
278 Archean character of the nuclei of the Antilles. 
Am. Geol., vol. xxi, pp. 250-251 (£ p.), 1898. 
279 Frenzel (A. B.). The turquoise deposit in Mohave County, Ari- 
zona. 
Eng. and Mg. Jour., vol. lxvi, p. 697, 1 fig., 1898. 
Describes the occurrence and chemical character of the material. 
280 Fuller (Myron L.). Notes on a Carboniferous bowlder train in 
eastern Massachusetts. 
Boston Soc. Nat. Hist., Proc, vol. xxviii, pp. 251-263, with map, 1898. 
Describes the character and distribution of the material and gives a 
bibliography of the subject. 
281 - — Champlain submergence in the Narragansett Bay region 
[Rhode Island]. 
Am. Geol., vol. xxi, pp. 310-321, 1898. 
Discusses theories as to the origin of certain glacial phenomena of 
the region. 
282 Crushed quartz and its source. 
Stone, vol. xviii, pp. 1-4, 1 fig., 1898. 
Describes the material from which the crushed quartz used in polish- 
ing, manufacture of glass, etc., is obtained. 
G. 
283 Gannett (Henry). Physiographic types. 
U. S. Geol. Surv., Topographic atlas of U. S., folio 1, 1898; Reviews by 
W. M. Davis, Jour, of Geol., vol. vi, pp. 431-433; Science, new ser., vol. 
vii, p. 766, 1898. 
Describes various physiographic types in the United States, illus- 
trated by topographic maps. 
