Huxley and Youmans's Physiology and Hygiene. By Thomas H. Huxley, LL. D., F.R.S., and William J. Youmans, M.D. New and revised edition. With numerous Illustrations. 12mo. 420 pages.

Coming's Class-Book of Physiology. With 24 Plates, and numerous Engravings on Wood. 12mo. 324 pages.

Youmans's Hand-Book of Household Science. A Popular Account of Heat, Light, Air, Aliment, and Cleansing, in their Scientific Principles and Domestic Applications. With numerous illustrative Diagrams. 12mo. 470 pages.

Physiography: An Introduction to the Study of Nature. By Thomas H. Huxley. With Illustrations and Colored Plates. 12mo.

Nicholson's Biology. Illustrated. 12mo. 163 pages.

Nicholson's Ancient Life-History of the Earth. A Comprehensive Outline of the Principles and Leading Facts of Paleontological Science. 12mo. 407 pages.

Anthropology: An Introduction to the Study of Man and Civilization. By Edward B. Tylor, D.C.L., F.R.S. With 78 Illustrations. 12mo. 448 pages.

Science Primers. Edited by Professors Huxley, Roscoe, and Balfour Stewart.

Chemistry: H. E. Roscoe.
Physics: Balfour Stewart.
Physical Geography: A. Geikie.
Geology: A. Geikie.
Physiology: M. Foster.
Astronomy: J. N. Lockyer.
Botany: J. D. Hooker.
Logic: W. S. Jevons.
Inventional Geometry: W. G. Spencer.
Pianoforte: Franklin Taylor.
Political Economy: W. S. Jevons.
Natural Resources of the United States: J. Harris Patton.
Scientific Agriculture: N. T. Lupton.

D. APPLETON & CO., Publishers,