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THE PRIMARY. FACTORS OF ORGANIC EVOLUTION. By 

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DARWIN AND AFTER DARWIN. An Exposition of the Dar- 

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1. THE DARWINIAN THEORY. With portrait of Darwin. Pp., 

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2. POST-DARWINIAN QUESTIONS. Heredity and Utility. With 

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3. POST-DARWINIAN QUESTIONS. Isolation and Physiological 

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AN EXAMINATION OF WEISMANNISM. By George John 

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THE PSYCHIC LIFE OF MICRO-ORGANISMS. By Dr. 

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ON GERMINAL SELECTION. By August Weismann. Pp., 

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ON MEMORY, AND THE SPECIFIC ENERGIES OF THE 

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A MECHANICO-PHYSIOLOGICAL THEORY OF ORGANIC 

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ON ORTHOGENESIS. By Th. Elmer. Pp., 56. Paper, 250. 

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THE PRINCIPLES OF BACTERIOLOGY. By Dr. Ferdinand 

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