MARYLAND GEOLOGICAL SURVEY 301

HUNTINGTON, OLIVER WHIFFLE. Catalogue of all recorded Meteor-
ites with a Description of the specimens in the Harvard College col-
lection, including the cabinet of the late J. Lawrence Smith (pre-
sented June 15, 1887).

Proc. Amer. Acad. Arts and Sci., n. s. vol. xv, whole ser. xxiii, Boston,
1888, pp. 37-110.

Mentions meteorites which fell at Nanjemoy, Charles county, Feb. 10, 12 A. M.,
1825, No. 98 in Harvard College; and at Emmitsburg, 1854 (?), No. 211.

KNOWLTON, F. H. The Fossil Lignites of the Potomac Formation.
Proc. Amer. Assoc. Adv. Sci., vol. xxxvii, 1888, pp. 206-208.
Abstract of the original paper, which itself is an abstract of Bull. U. S. Geol. Surv.
No. 5G.

MARSH, O. C. Notice of a New Genus of Sauropoda and other
new Dinosaurs from the Potomac Formation.

Amer. Jour. Sci., 3rd ser., vol. xxxv, 1888, pp. 89-94, Figs. 1-9.

Description of remains collected largely from the vicinity of Muirkirk, Prince George
County, by J. B. Hatcher under the auspices of the U. S. Geol. Surv., including Pleuro-
coelus nanus (gen. et sp. nov.), Pleurocoelus altus (sp. nov.), Allosaurus medians (sp.
nov.) and Coelurus gracllis (sp. nov.).

McGEE, W J The Geology of the Head of Chesapeake Bay.

7th Ann. Rept. U. S. Geol. Surv., 1885-86, Washington, 1888, pp. 537-646,
plates 56-71.

(Abst.) Amer. Geol., vol. i, 1887, pp. 113-115.

The author discusses the hydrography, topography, exposures and geological forma-
tions; and concludes with a summary of the Quaternary history as recorded in the
Columbian formation, in its local and more general application.

———— Administrative Reports. Geologic and Paleontologic In-
vestigations.

7th Ann. Rept. U. S. Geol. Surv., 1885-86, Washington, 1888, p. 110.

———— The Columbia Formation.

Proc. Amer. Assoc. Adv. Sci., vol. xxxvi, 1888, pp. 221-222.
Brief paper on general relations and summary.

———— Three Formations of the Middle Atlantic Slope.

Amer. Jour. Sci., 3rd ser., vol. xxxv, 1888, pp. 120-143, 328-331, 367-388,
448-466, plate ii.

(Absts.) Nature, vol. xxxviii, 1888, pp. 91, 190.
Amer. Geol., vol. ii, 1SS8, pp. 129-131.

Introduction (pp. 120-143), and Potomac (pp. 323-331), Appomattox (pp. 367-388),
Columbia (pp. 448-466), Conclusion.

———— Paleolithic man in America; his Antiquity and Environ-
ment.

Pop. Sci. Mo., vol. xxxiv, 1888-89, pp. 20-36.
Discusses the geology at the head of the Chesapeake Bay.