The Advance of Science in the Last Half-Century

by Thomas Henry Huxley

HUXLEY AND YOUMANS'S ELEMENTS OF PHYSIOLOGY AND HYGIENE. By T.H. HUXLEY and W.J. YOUMANS. 12mo. Cloth, $1.50.

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JOHN TYNDALL'S WORKS.

ESSAYS ON THE FLOATING MATTER OF THE AIR, in Relation to Putrefaction and Infection. 12mo. Cloth, $1.50.

ON FORMS OF WATER, in Clouds, Rivers, Ice, and Glaciers. With 35 Illustrations. 12mo. Cloth, $1.50.

HEAT AS A MODE OF MOTION. New edition. 12mo. Cloth, $2.50.

ON SOUND: A Course of Eight Lectures delivered at the Royal Institution of Great Britain. Illustrated. 12mo. New edition. Cloth, $2.00.

FRAGMENTS OF SCIENCE FOR UNSCIENTIFIC PEOPLE. 12mo. New revised and enlarged edition. Cloth, $2.50.

LIGHT AND ELECTRICITY. 12mo. Cloth, $1.25.

LESSONS IN ELECTRICITY, 1875-'76. 12mo. Cloth, $1.00.