Family Treasures: A Study of the Inheritance of Normal Characteristics in Man

Family Treasures: A Study of the Inheritance of Normal Characteristics in Man

Family Treasures: A Study of the Inheritance of Normal Characteristics in Man

Family Treasures: A Study of the Inheritance of Normal Characteristics in Man

Excerpt

This book is written for amateurs in the study of human heredity and for those who are interested in personal inheritance of family traits. It is a simple presentation mainly by photographs of many of the normal traits appearing in families of two or more successive generations. During the past centuries nearly all of the emphasis of the study of man has been placed upon his spirit, whereas the study of his body and its origin has been neglected. Recently, however, there has developed a strong tendency to study not only the structure and physiology of the human body but also the source and origin of the many traits and attributes that characterize it. Because too little is known concerning human inheritance, this small collection of photographs of normal traits is presented in the belief that it will stimulate other students to make more extensive studies of particular family traits. From such collections valuable information will surely be obtained which will help to clarify the number of ancestral traits that are involved in making an individual person and may also furnish information concerning the method of the inheritance of these traits.

In the present volume a single trait has been selected and traced through 2-5 generations to emphasize the fact that it is inherited or "runs in the family." To demonstrate beyond doubt that many of the ordinary traits of man are received by inheritance from his ancestors through his parents is the first major task. Until recently man has been inclined to believe in the influence of the stars, in good and evil spirits, and even in wishful thinking as factors capable of determining the traits of a new baby. And though we have, for the most part, given up all such unwarranted theo-

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