"Again, that the seminal fluid is the most highly vitalized of all the fluids of the body, and that its rapid production is at the expense of a most exhaustive effort on the part of the vital forces, is well attested by all physiologists. It is further believed by some eminent physicians that the seminal fluid is of great use in the body for building up and replenishing certain tissues, especially those of the nerves and brain, being absorbed after secretion. Though this view is not coincided in by all physiologists, it seems to be supported by the following facts:- 1. The composition of the nerves and that of spermatozoa is nearly identical. 2. Men from whom the testes have been removed before puberty, as in the case of eunuch, are never fully developed as they would otherwise have been. The nervous shock accompanying the exercise of the sexual organs-either natural or unnatural-is the most profound to which the system is subject. The whole nervous system is called into activity; and the effects are occasionally so strongly felt upon a weakened organism that death results in the very act. The subsequent exhaustion is necessarily proportionate to the excitement."