Not only is this suggestion, made by our author at the end of his eighth chapter, both possible and probable, but it is more than likely that the brain itself, is, in origin and development, only a sort of great clot of genital fluid held in suspense or reserve; at first over the cervical ganglion, or, earlier or in other species, held in several clots over the scattered chief nerve centres; and augmenting in varying speeds and quantities into medulla oblongata, cerebellum and cerebrum. This hypothesis would perhaps explain a certain number of as yet uncorrelated phenomena both psychological and physiological. It I would explain the enormous content of the brain as a maker or presenter of images. Species would have developed in accordance with, or their development would have been affected by, the relative discharge and retention of the fluid; this proportion being both a matter of quantity and of quality, some animals profiting hardly at all by the alluvial Nile-flood; the baboon retaining nothing; men apparently stupefying themselves in some cases by excess, and in other cases discharging apparently only a surplus at high pressure; the gateux, or the genius, the "strong-minded." I offer an idea rather than an argument, yet if we consider sider that the power of the spermatozoide is precisely the power of exteriorizing a form; and if we consider the lack of any other known substance in nature capable of growing into brain, we are left with only one surprise, or rather one conclusion, namely, in face of the smallness of the average brain's activity, we must conclude that the spermatozoic substance must have greatly atrophied in its change from lactic to coagulated and hereditarily coagulated condition. Given, that is, two great seas of this fluid, mutually magnetized, the wonder is, or at least the first wonder is, that human thought is so inactive. Chemical research may have something to say on the subject, if it be directed to comparison of brain and spermatophore in the nautilus, to the viscous binding of the bee's fecundative liquid. I offer only reflections, perhaps a few data. Indications of earlier adumbrations of an idea which really surprises no one, but seems as if it might have been lying on the study table of any physician or philosopher. There are traces of it in the symbolism of phallic religions, man really the phallus or spermatozoide charging, head-on, the female chaos. Integration of the male in the male organ. Even oneself has felt it, driving any new idea into the great passive vulva of London, a sensation analogous to the male feeling in copulation.