. The present book, so far as British birds are concerned, is
practically unique. For the first time, an up-to-date manual, containing
an accurate and artistic picture of every species, is placed within the
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London: Walter Scott, Limited, Paternoster Square.

THE CONTEMPORARY SCIENCE SERIES.

Edited by HAVELOCK ELLIS.

NEW VOLUMES.

Crown 8vo, Cloth, Price 6s.; with a large number of
Illustrations and Diagrams.

The Natural History of Digestion.

BY A. LOCKHART GILLESPIE, M.D., F.R.C.P. ED., F.R.S. ED.

Dr. Gillespie, who has long been known as an original investigator in
this department of physiology, has in the present volume attempted to
bring together all the facts and recent discoveries bearing on this
subject of great scientific and practical importance. Dealing with the
subject in much detail, as well as broadly and comprehensively, the book
appeals both to medical specialist and general reader. The author shows
that digestion is a process which occurs throughout animated nature, and
beginning with digestion in plants, and describing many original and
other experiments with carnivorous plants, he passes on to digestion in
the lower animals, and then deals fully with the many complicated
problems offered by digestion in the higher animals and man. The
practical questions of diet are examined in their various aspects, and
the influence of alcohol, tea, and other stimulants discussed.

* * * * *

Crown 8vo, Cloth, Price 6s. With Illustrations.

Degeneracy: ITS CAUSES, SIGNS, AND RESULTS.

By Professor EUGENE S. TALBOT, M.D., Chicago.

This volume presents, in a simple and comprehensive way, the basis of
fact on which the speculations of Nordau and others have been founded.
It is the first book written in English by a competent authority dealing
broadly with this subject. The author deals with more especial fulness
with the signs of degeneracy in the head and face--ears, jaws, teeth,
etc.--as those which he has chiefly studied, and which are of most
general interest; but he also discusses degeneracy in the body
generally, as well as its mental forms. The chief causes tending to
produce degeneracy in modern life are discussed--heredity, climate,
foods, alcohol, education, etc.--and the methods of combating them
considered. The book is fully illustrated, chiefly from original
photo