2fi BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [boll. 162. 
c. 
117 Cabrera (Rainiundo). Mineral resources of Cuba. Translated 
from the Spanish, by Louis Edward Levy. 
Franklin Inst., Jour., cxlvi, pp. 26-41 ; Abstracts, Eng. and Mg. Jour., 
vol. lxvi, pp. 308-309; Mines and Minerals, vol. xix, pp. 158-159, 1898. 
Describes occurrence of asphaltum, copper, iron, manganese, and gold. 
118 Call (R. Ellsworth). The hydrographic basins of Indiana and 
their inolluscan fauna. 
Ind. Acad. Sci., Proc. 1896, pp. 247-257, with map, 1897. 
Describes the drainage systems of Indiana. 
119 Calvin (Samuel). Fifth Annual Report of the State Geologist 
[Iowa]. 
Iowa Geol. Surv., vol. vii, pp. 11-27, pi. i, 1897. 
Gives a review of the work of the members of the survey and 
includes a geologic map of the State. 
120 Geology of Johnson County [Iowa], 
Iowa Geol. Surv., vol. vii, pp. 35-104, pi. iii, figs. 1-9, with geologic 
map, 1897. 
Describes the physiography, drainage systems, the character and 
occurrence of the Silurian, Devonian, Carboniferous, and Pleistocene 
formations, and the occurrence of building stones. 
121 Geology of Cerro Gordo County [Iowa]. 
Iowa Geol. Surv., vol. vii, pp. 119-195, figs. 10-24, with geologic map, 
1897. 
Describes the physiographic "and drainage features, the occurrence 
and character of the Devonian, Carboniferous, and Pleistocene forma- 
tions, and the occurrence of building stones and clays. 
122 Sixth Annual Report of the State Geologist [Iowa]. 
Iowa Geol. Surv., vol. viii, pp. 11-23, pi. ii, 1898. 
Gives a sketch of the geologic work of the survey during 1897 and a 
geologic map of the State. 
123 Geology of Delaware County [Iowa]. 
Iowa Geol. Surv., vol. viii, pp. 121-192, pis. vii-xiii, with geologic map, 
1898. 
Describes the physiography, the occurrence and character of the 
Ordovician, Silurian, Devonian, Cretaceous, and Pleistocene formations, 
and the occurrence of building stones, clay, and road material. 
124 Geology of Buchanan County [Iowa]. 
Iowa Geol. Surv., vol. viii, pp. 203-253, pis. xiv-xx, with geologic map, 
1898. 
Describes the physiographic features and the occurrence and charac- 
ter of the Silurian, Devonian, and Pleistocene formations, and the 
occurrence of building stones. 
125 [Contribution to "A symposium of the classification and 
nomenclature of geologic time divisions"]. 
Jonr. of Geol., vol. vi, pp. 352-355, 1898. 
