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2. Germs of Mind in Plants. By R. H. Francé. Translated by A. M. Simons. Cloth, illustrated, 50 cents.

A cardinal point in the philosophical systems favored by the ruling classes is that the mind of man is something unique in the universe, governed by laws of its own that have no particular connection with physical laws. Modern science has proved that not only animals, but also plants, receive impressions from the outside world and use the data thus obtained to modify their movements for their own advantage, exactly as human beings do. These facts are told in this book in so charming and entertaining a style that the reader is carried 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.

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 prole-