24 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 149- 
88 Burdsal (0. W.). Cedar Canyon mining district [Washington]. 
Mining, vol. i, pp. 191-192, 1896. 
Describes briefly the geology of tbe region and the occurrence of silver 
ores. 
c. 
89 Calvin (Samuel). Geology of Jones County [Iowa]. 
Iowa Geol. Surv., vol. v, pp. 33-112, pis. i-ii, figs. 1-8, 1896. 
Describes the physiography, the stratigraphic features of the Niagara, 
Carboniferous, and Pleistocene deposits, including local details, and the 
occurrence of building stones, soils, lime, clays, road materials, and water 
supply. Includes geologic map of the county. 
90 The Le Claire limestone [Iowa]. 
..Iowa State Univ., Lab. of Nat. Hist., Bull., vol. iii, pp. 183-189, pis. 
i-ii, 1896. 
Describes the character and distribution of the Le Claire limestone, a 
subdivision of the Niagara, and the phenomena of oblique bedding. 
91 The Le Claire limestone. 
Iowa Acad. Sci., Proc, vol. iii, pp. 52-58, pis. i-ii, fig. 2, 1896. 
Describes peculiar features of deposition in the Niagara strata in 
portions of Iowa, and discusses its origin. 
92 The Buchanan gravels; an inter-Glacial deposit in Buchanan 
County, Iowa*. 
Iowa Acad. Sci., Proc, vol. iii, pp. 58-60, pis. iii-iv, 1896. 
Describes the occurrence of Glacial gravels. 
93 The Buchanan gravels; an inter-Glacial deposit in Buchanan 
County, Iowa. 
Am. Geol., vol. xvii, pp. 76-78, pis. iv-v, 1896. 
94 Apparent anomalies of stratification in the Postville well 
[Iowa]. 
Am. Geol., vol. xvii, pp. 195-203, 1896. 
Describes the characteristics of the Galena and Trenton limestones of 
the region and discusses some of the peculiarities of deposition. 
95 The Cedar Valley quarry [Iowa]. 
Eng. and Mg. Jour., vol. lxi, p. 544, fig. 1, 1896. 
Describes the occurrence of building stone at this locality, of Upper 
Siluran age. 
96 Campbell (Marius R.). Pocahontas folio, Virginia and West 
Virginia. 
U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26, 1896. 
Describes the physiographic features, the character and distribution 
of rocks of Cambrian, Silurian, Devonian, and Carboniferous age, the 
geologic structure of the region and occurrence of coal, iron ores, and 
soils. " Includes topographic, geologic, and structure section maps and a 
sheet of columnar sections. 
