CAREY.—The Works of Henry C. Carey:

Harmony of Interests: Agricultural, Manufacturing and Commercial. 8vo. $1.50

Manual of Social Science. Condensed from Carey's "Principles of Social Science." By Kate McKean. 1 vol. 12mo. $2.25

Miscellaneous Works. With a Portrait. 2 vols. 8vo. $6.00

Past, Present and Future. 8vo. $2.50

Principles of Social Science. 3 volumes, 8vo. $10.00

The Slave-Trade, Domestic and Foreign; Why it Exists, and How it may be Extinguished (1853). 8vo. $2.00

The Unity of Law: As Exhibited in the Relations of Physical, Social, Mental and Moral Science (1872). 8vo. $3.50

CLARK.—Tramways, their Construction and Working:

Embracing a Comprehensive History of the System. With an exhaustive analysis of the various modes of traction, including horse-power, steam, heated water and compressed air; a description of the varieties of Rolling stock, and ample details of cost and working expenses. By D. Kinnear Clark. Illustrated by over 200 wood engravings, and thirteen folding plates. 2 vols. 8vo. $12.50