Life Areas of North America: A Study in the Distribution of Animals and Plants. By Dr. C. Hart Merriam, Chief of the Biological Survey, U. S. Department of Agriculture.

Age, Growth, Sex, and Death. By Professor Charles S. Minot, Harvard Medical School.

History of Botany. By Professor A. H. Green.

Planetary Motion. By G. W. Hill.

Infection and Immunity. By George M. Sternberg, Surgeon-General, U.S.A.

The Mental Functions of the Brain

An Investigation into their Localisation and their Manifestation in Health and Disease.

By Bernard Hollander, M.D. (Freiburg i.B.), M.R.C.S., L.R.C.P. (London.)

Illustrated with the clinical records of eight hundred cases of localised brain derangements and with several plates. 8º.

(By mail, $3.75.)       Net, $3.50.