MARYLAND GEOLOGICAL SURVEY 275

HODGE, JAS. T. Report of the Coal Properties of the Cumberland
Coal Basin in Maryland, from surveys and examinations made during
the summer of 1868. New York, 1869. 65 pp.

Discusses coal region, property lines, coal bed, drainage and access, system of mining,
and product to the area. One of the most valuable papers yet published on the subject.

LEIDY, J. The Extinct Mammalian Fauna of Dakota and

Nebrasqa, including an account of some allied forms from other local-
ities, [etc.]

Jour. Acad. Nat. Sci., Phila., n. s. vol. vii, 1869, pp. 255-256.

Describes elephants' teeth from Talbot Co.

LOGAN, WM. E. Geological map of Canada and the Northern
United States.

(Rev.) Amer. Jour. Sci., 2nd ser., vol. xlix, 1870, pp. 394-398.
Bears date of 1866, but was not published until 1869.

1870.

ANON. Report of the Joint Standing Committee on Jones Falls to
the First Branch of the City Council of Baltimore (etc.) Baltimore,
1870. 178 pp.

CARRUTHERS, WM. On Fossil Cycadean Stems from the Secondary
Rocks of Britain... (Read 1868.)

Trans- Linn. Soc., vol. xxvi, 1870, p. 708.

In a postscript to the above memoir the author mentions a photograph of specimen
discovered by Tyson in 1859 in Maryland.

GARRETT, J. W. Proceedings of Railway Meetings held in rela-
tion to the Baltimore and Ohio and its Extensions, Branches and
Connections, at Pittsburg, Uniontown, Chicago, Louisville, and else-
where and the Remarks of John W. Garrett, President, at those points.
8vo. 31 pp. 1870.

Folded map of the B. & O. and its connections.

ROESSLER, A. R. Mining Summary. Maryland.

Eng. and Min. Jour., vol. ix, New York, 1870, p. 37.

Describes the occurrence of gold and the mineral resources of Montgomery county.

1871.

CREDNER, HERMANN. Die Geognosie und der Mineralreichtum
des Alleghany Systems.

Petermann's Mitth., vol. xvii, pp. 41-50.
General discussion of economic resources. Map.