The greater part of the first three chapters of this book appeared in the Journal of Abnormal Psychology in the December-January number of 1915-16 and the February-March number of 1916. This material is reprinted here by the kind permission of the Editor of that Journal. This part of the subject is chiefly historical and the data here given is accessible as indicated by the references throughout the text, although many of these books are difficult to secure or are out of print. For this historical material I am particularly indebted to the writings of Hargrave Jennings, Richard Payne Knight and Doctor Thomas Inman. Most of the reference matter coming under the general heading of Nature Worship was obtained from comparatively recent sources, such as the publications of the Bureau of American Ethnology, of the Smithsonian Institute, and certain publications of the American Museum of Natural History. Frazer’s Golden Bough and other writings of J. G. Frazer on Anthropology furnished much valuable information. The writings of special investigators, among others those of Spencer, and A. W. Howitt, on Primitive Australian Tribes, and W. H. R. Rivers on the Todas have been freely drawn upon. A number of other books and references have been made use of, as indicated throughout the text. I have found two books by Miss J. Harrison, i. e., Themis and Ancient Art and Ritual, of great value in interpreting primitive ceremonies and primitive customs in general.

My main object has been to give the life history of a primitive motive in the development of the race, and to emphasize the dynamic significance of this motive. Later other motives may be dealt with in more detail if it is proved that both in normal and abnormal psychology we may best understand the mental development of the individual through our knowledge of the development of the race.

I wish to take this opportunity to express my appreciation of the assistance rendered me by my wife.