The idea of the prenatal culturist is that the mental as well as the physical growth and development of the unborn child can be controlled by the mother. The only ground for this belief is as follows: The child is nourished from the blood or nutritive fluid of the mother, with the result that the growth and the development of the child may be very readily influenced by the nutrition of the mother. [Sidenote: Influence of fright, anger, etc.] The mental condition of the mother has an influence on the growth of the child, but it is indirect. All organs and functions of the human body are controlled by the nervous system, and if the nervous impulse be deranged or weakened it may result in a serious impairment of nutrition. For this reason fright, anger, and other strong passions may result in lasting injury to the unborn child, but this injury is at most a matter of stunting or malnutrition, and cannot result in the voluntary mental life of the mother being transmitted to the child. [Sidenote: Mother's nutrition the only factor in influencing her child] As evidence of these assertions, I would call the reader's attention to the fact that there is no nervous connection whatever between the embryo and the mother, but after the fertilization of the germ-cell, the only way in which the mother can influence the growth of the child is by the nutrition which her blood supplies to the growing tissue of the embryo. [Sidenote: Birthmarks] As further proof of these statements, I will cite the investigations of Darwin in regard to the popular superstition of birthmarks. At the instance of Mr. Darwin, some seven or eight hundred women of a London hospital were very carefully questioned before the birth of the child, as to any incidents which had happened that, according to popular notions, might result in birthmarks or deformities. In no instance was any incident given which resulted in the expected deformity; but the most interesting feature of the investigation was that several women whose children were born with birthmarks recalled, upon seeing the deformity, some incident which seemed to give a possible explanation, thus showing to the mind of anyone familiar with psychology that the true explanation of all so-called remarkable incidents of birthmarks and of prenatal influence is merely one of superstition or self-deception. HEREDITY How often we hear someone remark upon the wonders of heredity. People are astonished because John should look like John's father. As a matter of fact, the astonishment should come the other way. The child is but a continuation of the life of the parents. The cells from which the child develops have within them the power to grow and to produce individuals like the parents. This is wonderful, but it is only another form of the wonder of a willow twig growing into a willow tree when placed in moist earth. [Sidenote: Why the child is not identical with parents]