BIBLIOGRAPHY. 69

1902.

Darton, N. H.—Norfolk Folio, Virginia-North Carolina. U. 8. Geol. Surv.,
Geol. Atlas of U. S., Folio No. 80, 4to, 4 pp., 2 maps, 6 figs., Washington,
1902.

The configuration of a portion of Camden and Currituck counties is
described. The author states that the Pliocene probably underlies the
entire Dismal Swamp region, though the paleontological evidence which
he offers does not seem to be conclusive, and in the present report these
strata are referred to the Pleistocene. The origin of the Dismal Swamp

is also discussed.
1803.

Cogs, Cotitier.—Origin of the Sandhill Topography of the Carolinas. Science,
n. S., vol. 17, 19038, pp. 226-227. ‘
Notes olian cross-bedding in the sand accumulations. Comments on the
similarity in composition of these sands to those of the present beaches, and
states that this explains the origin of some of the topographic features.

1904.

Copz, Cortimr.—The Forms of Sand-dunes as Influenced by Neighboring
Forests. Wlisha Mitchell Sci. Soc. Jour., yol. 20, 1904, p. 14.
Discusses the factors which tend to prevent sand-dunes, which have
been heaped up along the coast by east winds, from being blown back into
the sea by west winds.

PRATT, JosepH Hype.—The Mining Industry in North Carolina During 1903.
N. C. Geol. Surv., Econ. Paper No. 8, 74 pp., map; Raleigh, 1904.
The shell limestones along the Northeast Cape Fear and Trent rivers
are briefly described and statements are made concerning their use for
structural purposes and as a source for lime (p. 56).

SLoan, Earte—A Preliminary Report on the Clays of South Carolina. South

Carolina Geological Survey, series 4, Bull. No. 1, 1904, 175 pp.

Describes and classifies the Coastal Plain deposits. He introduces the
name “Hamburg clays” for the basal Cretaceous formation, and the name
Middendorf beds for an immediately overlying Cretaceous formation. The
“Hamburg clays” correspond to the Patuxent formation of the present

report.
1905.

Fuiuer, M. L.—Underground Waters of Hastern United States: North Caro-
lina. U.S. Geol. Survey Water Supply and Irrigation Paper No. 114, pp.
136-139, 1 fig.; Washington, 1905.

The article contains a very brief description of the Coastal Plain region

of North Carolina.

Warp, Lester F.—Status of the Mesozoic Floras of the United States. U. S.
Geol. Survey, Mon. 48, 1905; Pt. I, text 616 pp.; Pt. II, 119 pls.

Describes briefly (pp. 385-392) the Cretaceous deposits exposed on Cape

Fear River and some of its tributaries, and in the railroad cuts between

Sanford and Fayetteville. Those appearing in the bluffs at Fayetteville

are referred to the older Potomac of Virginia. Higher beds farther down