Adequately to write the history of the woman of any race would mean the writing of the history of the nation itself. There is no phase of the cultural life of any people that is not founded upon the physical and moral nature of its women. On the other hand, mental and moral heredity, both through paternity and maternity, determines the character and innermost being of woman. If we knew all the preponderating influences of heredity for ages, we could with almost mathematical accuracy compute the traits of human biology in every case. The forces of environment, tremendous though they are, modify, but do not alter in any way the original nature of man, which is established and standardized "by eternal and immutable laws." Anthropology is continuously progressing toward a firm scientific foundation, and is beginning to organize even the vast domain of psychology into a well-defined system. The interdependence between physical, mental, and moral traits is well recognized, but its exact determination is impossible, owing to the infinite complexity of the endless ancestral potencies.