398 BIBLIOGRAPHY AND CARTOGRAPHY

———— Fredericksburg Folio.

Geologic Atlas of the United States, folio Xo. 13. Washington, 1894.

13 7/8x17 1/2, contours 50 ft., seven colors. Scale 1/125000. (J. H. U.)

DOUGLAS, H. T. (Eng.). City of Baltimore Topographical Survey
(in 42 sheets).

27 1/2x27 1/2, contour interval 5 ft. Scale 26.4 inches to a mile.

GRIMSLEY, G. P. Geological map of the Northwestern Portion of
Cecil County, Maryland.

Cincinnati Soc. Nat. Hist., vol. xvii, 1894.

5x6 1/2, six patterns. Scale 2 miles to an inch. (J. H. U.)

KEITH, A. Harpers Ferry Folio.

Geologic Atlas of the United States, folio No. 10. Washington, 1S94.

137/8x17 1/2, contour 100 ft., 15 colors. Scale 1/125000.

———— Geologic map of the Catoctin Belt by Arthur Keith 1893.
14th Ann. Rept. U. S. Geological Survey. Washington, 1894. Part ii.
p. 309.

10x13, contour 200 ft., 16 colors. Scale 1/375000. (J. H. U.)

———— Map of the Tertiary Base-level by Arthur Keith.

14th Ann. Rept. U. S. Geol. Survey, part ii. Washington, 1894. p. 377.
10x13, contour 100 ft., colored. Scale 1/375000. (J. H. U.)

MARYLAND STATE WEATHER SERVICE. Map of Maryland and Dela-
ware showing the Precipitation and lines of mean temperature for
1894.

Monthly Report, 1894-5, vol. iv and vol. v.

Maps given for each month in the year.

WEEKS, T. D. Upper Potomac and Elk Garden Coal Basins.

14th Ann. Rept. U. S. Geol. Survey, part ii. Washington, 1894. p. 580.
12 1/2x6 1/2, contoured, with some geological lines. Scale 3 3/4 miles to an inch.

WILLIAMS, G. H. Map showing the known and probable occur-
rences of Ancient Volcanic Rocks in Eastern North America, by
George Huntington Williams 1893.

Jour. Geol., vol. ii, p. 1, 1894.

6x7 3/4, outline, colored geologically in two colors. Scale about 200 miles to an inch.
(J. H. U.)

1895.

ANON. Map of the Cumberland, Georges Creek Coal Region. 1895.

17 1/2x25. Property and railroad lines, also line of outcrop of " Big Vein." Hachured.
Scale 1 mile to an inch. (J. H. U.)