rried along and does not realize until later the
revolutionary significance of the facts.

3. +The End of the World.+ By Dr. M. Wilhelm Meyer. Translated by Margaret
Wagner. Cloth, illustrated, 50 cents.

This book answers in the light of the discovery of modern science
the questions frequently asked as to the probable end of human life
on this planet. Moreover, it goes a step further in making clear
the relations of man's life to the universe life. We have already
seen that "mind" is but another form of "life." Dr. Meyer shows
that not only animals and plants but even worlds and suns have
their birth, growth, maturity, reproduction, decay and death, and
that death is but the preparation for a new cycle of life.

4. +Science and Revolution: A Historical Study of the Evolution of the
Theory of Evolution.+ By Ernest Untermann. Cloth, 50 cents.

A history of the evolution of the theory of evolution, from the
earliest scientific writings that have been preserved, those of the
Greek philosophers, down to the present time. The author shows how
the ruling classes, living on the labor of others, have always
supported some form of theology or mysticism, while the working
classes have developed the theory of evolution, which is rounded
out to its logical completion by the work of Marx, Engels and
Dietzgen. The author frankly recognizes that no writer can avoid
being influenced by his class environment, and he himself speaks
distinctly as a proletarian and a Socialist. "Science and
Revolution" is an essential link in the chain of evidence proving
that conclusions drawn by Socialists from the facts of science.

5. +The Triumph of Life.+ By Wilhelm Boelsche. Translated by May Wood
Simons. Cloth, 50 cents.

The German critics agree that this book is even more interesting
than "The Evolution of Man," by the same author. It tells of the
struggle of life against its physical environment, and introduces a
wealth of scientific detail charming set forth. The German original
contains no illustrations, but our edition is fully illustrated
with pictures that aid materially in an understanding of the text.

6. +Life and Death, a Chapter from the Science of Life.+ By Dr. E.
Teichmann. Translated by A. M. Simons. Cloth, 50 cents.

A study of how life begins and how it ends. It does not