B. G. Jefferis and J. L. Nichols, Searchlights on Health — How to Determine a Perfect Human Figure (1919)
“ The navel is the central point of the human body, and if a man should lie on his back with his arms and legs extended, the periphery of the circle which might be described around him, with the navel for its center, would touch the extremities of his hands and feet. The height from the feet to the top of the head is the same as the distance from the extremity of one hand to the extremity of the other when the arms are extended. ”
