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...

MUIRHEAD LIBRARY OF PHILOSOPHY An admirable statement of the aims of the Library of Philosophy was provided by the first editor, the late Professor J. H. Muirhead, in his description of the original programme printed in Erdmann's History of Philosophy under the date 1890. This was slightly modified in subsequent volumes to take the form of the following statement: "The Muirhead Library of Philosophy was designed as a contribution to the History... more...

CHAPTER I THE PROBLEM DEFINED What is sex? Asexual and mixed reproduction; Origin of sexual reproduction; Advantage of sex in chance of survival; Germ and body cells; Limitations of biology in social problems; Sex always present in higher animals; Sex in mammals; The sex problem in the human species; Application of laboratory method. Sex, like all complicated phenomena, defies being crowded into a simple definition. In an animal or... more...

PREFACE It has always seemed to me a particular duty of the psychologist from time to time to leave his laboratory and with his little contribution to serve the outside interests of the community. Our practical life is filled with psychological problems which have to be solved somehow, and if everything is left to commonsense and to unscientific fancies about the mind, confusion must result, and the psychologist who stands aloof will be to... 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...

INTRODUCTION. There is no doubt that hypnotism is a very old subject, though the name was not invented till 1850. In it was wrapped up the "mysteries of Isis" in Egypt thousands of years ago, and probably it was one of the weapons, if not the chief instrument of operation, of the magi mentioned in the Bible and of the "wise men" of Babylon and Egypt. "Laying on of hands" must have been a form of mesmerism, and Greek oracles of Delphi and other... more...

SEX UNIVERSAL AND ETERNAL The fundamental basis of the universe is Sex. Sex is the fulcrum upon which our life-activities turn. It is the life of Man and of planets, and ignorance of the laws of Sex is the cause of death of both. It is the conjunction of the forces of attraction and repulsion; the positive and negative; the centripetal and centrifugal forces which hold stars and planets in their orbits—or rather, it is the two expressions... more...

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...

CHAPTER IATTAINMENT OF MIND CONTROL The Man of Tomorrow The men of the nineteenth century have harnessed the forces of the outer world. The age is now at hand that shall harness the energies of mind, new-found in the psychological laboratory, and shall put them at the service of humanity. Are you fully equipped to take a valiant part in the work of the coming years? The Dollars and Cents of Mental Waste The greatest of all eras is at hand!... more...

PREFACE. The publishers of this work offer no apology for presenting it to the reading public, since the wide prevalence of the evils which it exposes is sufficient warrant for its publication. The subjects with which it deals are of vital consequence to the human race; and it is of the utmost importance that every effort should be made to dispel the gross ignorance which almost universally prevails, by the wide diffusion, in a proper manner,... more...