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ORGANIC DIFFERENCES IN THE SEXES A grand difference between plant and animal life lies in the fact that the plant is concerned chiefly with storing energy, and the animal with consuming it. The plant by a very slow process converts lifeless into living matter, expending little energy and living at a profit. The animal is unable to change lifeless into living matter, but has developed organs of locomotion, ingestion, and digestion which enable it... more...

Page iii FOREWORD This book was written, originally and primarily, for use in a course entitled "Introduction to Contemporary Civilization," required of all Freshmen in Columbia College. It is an attempt to give a bird's-eye view of the processes of human nature, from man's simple inborn impulses and needs to the most complete fulfillment of these in the deliberate activities of religion, art, science, and morals. It is hoped that the book may... more...

FORWARD The present book is a continuation from "Psychoanalysis and the Unconscious." The generality of readers had better just leave it alone. The generality of critics likewise. I really don't want to convince anybody. It is quite in opposition to my whole nature. I don't intend my books for the generality of readers. I count it a mistake of our mistaken democracy, that every man who can read print is allowed to believe that he can read all... more...

INTRODUCTION Having read with much care the proof sheets of this book, I am prepared to say three things about it, and it gives me pleasure to say them here. THE BOOK IS WELL NAMED. "THE UNFOLDING LIFE." Turn which way we will, we see life unfolding all about us, and yet how faintly are its mysteries understood! And is it not the one thing above all others, which teachers, mothers, fathers and all of us, need to understand? It is well... more...

Chapter I THE ELEMENTS OF MEMORY Four Special Memory Processes You have learned of the sense-perceptive and judicial processes by which your mind acquires its knowledge of the outside world. You come now to a study of the phenomenon of memory, the instrument by which your mind retains and makes use of its knowledge, the agency that has power to resurrect the buried past or power to enfold us in a Paradise of dreams more perfect than reality.... more...


THE REPRODUCTION OF LIVING BEINGS History of the Germ:—Cell-division—Parthenogenesis—Conjugation—Mneme—Embryological Development— Difference of the Sexes—Castration—Hermaphrodism— Heredity—Blastophthoria. A general law of organic life decrees that every living individual is gradually transformed in the course of a cycle which is called individual life, and which terminates with... more...

SENSES. Sight.—Light.—Five minutes after birth, slight sensibility to light (2). Second day, sensitiveness to light of candle (3). Sixth and seventh days, pleasure in moderately bright daylight (3, 4). Ninth and tenth days, sensitiveness greater at waking than soon afterward (3). Sleeping babes close the eyes more tightly when light falls on the eyes (4). Eleventh day, pleasure in light of candle and in bright object (3).... more...

THE MIND AND ITS EDUCATION CHAPTER I THE MIND, OR CONSCIOUSNESS We are to study the mind and its education; but how? It is easy to understand how we may investigate the great world of material things about us; for we can see it, touch it, weigh it, or measure it. But how are we to discover the nature of the mind, or come to know the processes by which consciousness works? For mind is intangible; we cannot see it, feel it, taste it, or handle... more...

EDITOR’S INTRODUCTION The present volume appeals to the editor of this series as one of the most significant books, viewed from the standpoint of the future of our educational theory and practice, that has been issued in years. Not only does the volume set forth, in language so simple that the layman can easily understand, the large importance for public education of a careful measurement of the intelligence of children, but it also... more...

The Senses in the Lower Animals The sense of touch—The senses of taste and smell—Actinophryans having taste—The sense of sight—Modification of sight organs by surroundings—Sight in Actinophryans—Blind fish sensitive to light—Blind spiders—Blind man—Primitive eyes in Cymothoe—In the jelly-fish, sea-urchin, Alciope, Myrianida—The sight organs of the snail—Power of vision in... more...