MARYLAND GEOLOGICAL SURVEY 269

1859.

ANON. The Western Maryland Railroad, its Agricultural and
Mineral Resources ... its future Importance to ... Baltimore. Balti-
more, 1859. 16mo. pp. (2), xii, 39 pp.

GABB, W. M. Description of some new Species of Cretaceous
Fossils.

Jour. Acad. Nat. Sci., Phila., 2nd ser., vol. iv, 1858-1860, pp. 299-305.
Refers to several fossils from Delaware and Chesapeake Canal, pp. 300, 302, 303.

JACKSON, CHAS. T. Maryland Marbles and Iron Ores.

Proc. Boston Soc. Nat. Hist., vol. vi, 1859, pp. 243-245.

Gives analyses and results of pressure tests on Cockeysville rock, also gives few
facts on iron ore near Whitehall.

JOHNSTON, CHRISTOPHER. Notes on Odontology.

Amer. Jour. Dental Sci., Phila., n. s. vol. ix, No. 3, 1859, pp. 337-343.

Description of Astrodon (afterwards called Astrodon Johnstoni) from Bladensburg.

ROGERS, H. D. Classification of the Metamorphic Strata of the
Atlantic Slope of the Middle and Southern States. (Read Feb. 18,

1857.)

Proc. Boston Soc. Nat. Hist., vol. vi, 1859, pp. 140-145.

Discusses the gneisses, semi-crystallines and Paleozoic rocks, mentioning the limits
between the first two on the B. & O. R. R. and elsewhere in Maryland.

1860.

FORDYCE, W. A History of Coal, Coke, Coal Fields, [etc.]
London: Sampson, Low, Son & Co., 1860.

Deals mostly with British coals, but refers to the state of trade in America in 1858.

LEE, THOS. J. Southern Boundary of Maryland.

Laid down in conformity with the agreement of Philip Calvert and Edmund Scar-
brugh (1668). Map by John de la Camp. Annapolis, 1860.

PIGGOTT, A. SNOWDEN. Prospectus of the Mineral Hill Mine,
Carroll County, Maryland. 8vo. 8 pp. Baltimore, 1860.

Brief report on mine by the author.

TYSON, P. T. First Report of Philip T. Tyson, State Agricultural
Chemist, to the House of Delegates of Maryland, Jan. 1860. 8vo.
145 pp. Annapolis, 1860. Maps.

Md. Sen. Doc. [E]. Md. House Doc. [C].

Deals with the rocks and soils, fertilizers, etc., and explains the accompanying
geological map.

———— Report of Chemist, n. d. (1860), 8vo, 4 pp.