MARYLAND GEOLOGICAL SURVEY 245

MORTON, S. G. On the analogy which exists between the Marl of
New Jersey, &c., and the Chalk formation of Europe.

Amer. Jour. Sci., vol. xxii, 1832, pp. 90-95.

Published separately.

Includes extracts from the Reports on the Memoir of M. Dufresnoy, &c. Read
before the French Institute, April 25, 1831. Reference to Dr. Morton's work on the
Cretaceous of Maryland, pp. 93, 95 (see Brongniart, 1S31).

PIGMAN. Report and Resolution relative to the Southern and
Western Limits of this State. Annapolis, 1832. sm. 8vo. 22 pp.
Md. Pub. Doc., Dec. Sess., 1831.

POMEROY, SAM. WHYLLYS. Remarks on the Coal Region between
Cumberland and Pittsburgh, and on the Topography, Scenery, etc.,
of that portion of the Alleghany Mts. [Letter written Nov. 1831.]

Amer. Jour. Sci., vol. xxi, 1832, pp. 342-347.

RUFFIN, ED. An Essay on Calcareous Manures.

(See Ruffin, 1842.)

1833.

ANON. Seventh Annual Report of the President and Directors to
the Stockholders of the Baltimore and Ohio Rail Road Company.
8vo. 194 pp. 1833.

Folded map and profile of the projected lateral railroad to the city of Washington
in connection with the first nine miles of the B. & O. R. R., showing the entire route
from Baltimore to Washington. Scale, one mile to the inch..

BERTHIER, P. Analysis of Fer Titane of Baltimore.

Amer. Jour. Sci., vol. xxiv, 1833, pp. 375-376.
Extracted from Annales des Mines, tom, lii, p. 39.

———— Analyse de clivers Mineraux Metalliques. Fer Titane de
Baltimore en Maryland.

Ann. des Mines, 3me serie, tome iii, 1833, pp. 41-43.
Brief account of the minerals, their occurrence and properties.

DURAND, E. On the Alum and Copperas Manufactury of Cape
Sable, Md.

Jour. Phila. Col. Pharmacy, vol. v, 1833, p. 12.

A letter written in 1817 describing the works formerly carried on by Dr. Troost.

FINCH, I. Travels in the United States of America and Canada.
8vo. 455 pp. London, 1833.

Has a chapter devoted to Fort Washington and St. Mary's; also other incidental
references to geology.