236 BIBLIOGRAPHY AND CARTOGRAPHY

1796.

CAREY, M. Carey's American Pocket Atlas containing the follow-
ing maps, viz....... with a concise Description of each State. Phila.
1796. 12mo. 118 pp.

Contains a small map of Maryland with a short description, pp. 01-94.

1807.

SCOTT, JOSEPH. A Geographical description of the states of Mary-
land and Delaware. Phila., Kimber, Conrad & Co., 1807.

Contains brief enumeration of rivers, bays, islands; also description of its natural
features, trade, education, counties and towns. A valuable little summary of Mary-
land's resources as then known, accompanied by a small map showing the location of
twenty-one towns.

1809.

GODON, SILVAIN. Observations to serve for the Mineralogical Map
of the State of Maryland. (Read Nov. 6, 1809.)

Trans- Amer. Phil. Soc., o. s. vol. vi, 1809, pp. 319-323.
Observations on the area about Washington and Baltimore.

LATROBE, B. H. An account of the Freestone Quarries on the
Potomac and Rappahannock rivers. (Read Feb. 10, 1807.)
Trans. Amer. Phil. Soc., o. s. vol. vi, 1809, pp. 283-293.
Describes the geological formations below Mt. Vernon and the Piscataway river.

MACLURE, WM. Observations on the Geology of the United States,
explanatory of a Geological Map. (Read Jan. 20, 1809.)

Trans. Amer. Phil. Soc., o. s. vol. vi, 1809, pp. 411-428.
Broad correlations and generalizations.

1810.

HAYDEN, H. H. ["Mineralogical and Geological Description of
the Country surrounding Baltimore to the extent of about nine
miles."]

Balt. Med. Phil. Lye., vol. i, 1810, pp. 255-271.

A letter to Dr. Nathaniel Potter written in 1810. It contained a description of the
Bare Hills, " which was subsequently republished in Dr. Bruce's Journal " (1814).

1811.

MACLURE, WM. Suite des observations sur la geologic des Etats-
Unis. Journ, de phys., cle chim. et d'hist. nat, vol. lxxiii. Paris,
1811. With map.