Selection from contents: I. The Mechanistic Conception of Life. II. The Significance of Tropisms for Psychology. III. Some Fundamental Facts and Conceptions concerning the Comparative Physiology of the Central Nervous System. IV. Pattern Adaptation of Fishes and the Mechanism of Vision. V. On Some Facts and Principles of Physiological Morphology. VI. On the Nature of the Process of Fertilization. VII. On the Nature of Formative Stipulation (Artificial Parthenogenesis). VIII. The Prevention of the Death of the Egg through the Act of Fertilization. IX. The Rôle of Salts in the Preservation of Life. X. Experimental Study of the Influence of Environment on Animals. LOEB, J.: The Organism as a Whole. G. P. Putnam’s Sons. New York, 1916. Selection from contents: I. Introductory Remarks. II. The Specific Difference between Living and Dead Matter and the Question of the Origin of Life. III. The Chemical Basis of Genus and Species: 1. The Incompatibility of Species not Closely Related. 2. The Chemical basis of Genus and Species and of Species Specificity. IV. Specificity in Fertilization. V. Artificial Parthenogenesis. VI. Determinism in the Formation of an Organism from an Egg. VII. Regeneration. VIII. Determination of Sex, Secondary Sexual Characters and Sexual Instincts: 1. The Cytological Basis of Sex Determination. 2. The Physiological Basis of Sex Determination. IX. Mendelian Heredity and its Mechanism. X. Animal Instincts and Tropisms. XI. The Influence of Environment. XII. Adaptation to Environment. XIII. Evolution. XIV. Death and Dissolution of the Organism. LOEB, J.: “Forced Movements, Tropisms, and Animal Conduct.” J. B. Lippincott, Philadelphia, 1918. Selection from contents: I. Introduction. II. The Symmetry Relations of the Animal Body as the Starting Point for the Theory of Animal Conduct. III. Forced Movements. IV. Galvanotropism. V. Heliotropism. The Influence of One Source of Light. 1. General Facts. 2. Direct Proof of the Muscle Tension Theory of Heliotropism in Motile Animals. 3. Heliotropism of Unicellular Organisms. 4. Heliotropism of Sessile Animals. VI. An Artificial Heliotropic Machine. VII. Asymmetrical Animals. VIII. Two Sources of Light of Different Intensity. IX. The Validity of the Bunsen-Roscoe Law for the Heliotropic Reactions of Animals and Plants. X. The Effect of Rapid Changes in Intensity of Light. XI. The Relative Heliotropic Efficiency of Light of Different Wave Lengths. XII. Change in the Sense of Heliotropism. XIII. Geotropism. XIV. Forced Movements Caused by Moving Retina Images: Rheotropism: Anemotropism. XV. Stereotropism. XVI. Chemotropism. XVII. Thermotropism. XVIII. Instincts. XIX. Memory Images and Tropisms. A list of _554 books on this subject_, in which any reader interested will find a vast storehouse of exact knowledge in this line. Author. CONKLIN, EDWIN GRANT: “Heredity and Environment in the Development of Men.” Princeton University Press, 1915.