242 BIBLIOGRAPHY AND CARTOGRAPHY

———— Description of the Fossil Shells which characterize the
Atlantic Secondary Formation of New Jersey and Delaware; includ-
ing four new species. (Read Dec. 11, 1827, Jan. 1, 1828.)

Jonr. Acad. Nat. Sci. Phila., vol. vi, 1829, pp. 72-100. Plates iii-vi.

This paper is Intended ns n supplement to the Yanuxem-Morton paper, and while
the individual forms described are not from Maryland, this is included because of its
relation to the first paper and the fact that the forms here described are highly devel-
oped in Maryland. This folio was printed January, 1828.

VANUXEM, L., and MORTON, S. G. Geological Observations on
Secondary, Tertiary, and Alluvial formations of the Atlantic coast of
the United States arranged from the notes of Lardner Yanuxem.
(Head Jan. 1828.)

Jour. Acad. Xat. Sci. Phila., vol. vi, 1829, pp. 59-71.

Reference to Maryland Tertiary formations and a number of fossils cited on pp.
67-68. Objects to Say's genus " Dispotea." This folio was printed January, 1828.

1829.

ANON. Third Annual Report of the President and Directors to
the Stockholders of the B. & O. R. R. 8vo. 105 pp.

Map embracing various routes and profiles of the two principal routes surveyed for
the B. & O. from Baltimore to Williamsport.

LIVERMORE & DEXTER. A collection of fossil earths, and minerals
from the deep cut of the Delaware and Chesapeake Canal, with memoir
and profile of geological strata developed in progress of work.

Proc. Amer. Phil. Soc., vol. xxii (2), 1884, p. 594.

Mentioned in Minutes Proc. Amer. Phil. Soc., 1743-1S38.

1830.

ANON. Fourth Annual Report of the President and Directors to
the Stockholders of the Baltimore and Ohio Railroad Company. 8vo.
153 pp. 1830.

Engineer's Report. Map [same as in 3rd Ann. Rept.].

ANON. Gold in Maryland.

Amer. Jour. Sci., vol. xvii, 1830, p. 202.

Brief note on its recent discovery. " It is known to exist in Virginia, and these
localities, with those of North Carolina, appear to form a straight line parallel or
nearly so, it is believed, with the Alleghany range. Quartz is abundant in the region
about that (locality not given) discovered in Maryland, as is the case also in that of
North Carolina."

BYRENS, DANIEL. Suggestions as to a union of effort to obtain a
correct account of the variation of the magnetic needle.
Amer. Jonr. Sci., vol. xviii, 1830, pp. 380-381.
Declination determined as ten to fifteen minutes west variation.