Beaunis, by a somewhat far-fetched system of reasoning, classes the sexual impulse with the "needs of activity,"* coordinating with it the need of urination. That both these functions are mere "nervous explosions," aa partially argued by Ellis,4 and that there exists an "intimate connection between the explosion of sexual detumescence and the explosive energy of the bladder," each reinforcing and acting vicariously upon the other, is doubtless true to the extent that irritation of one of these organs is naturally reflected to the other; but that both have a common sexual origin, is open to very serious doubt. There is a partial erection, commonly referred to as "piss-proud," which disappears on micturition; and a nocturnal enuresis, and so-called "stammering" of the bladder, which are extremely apt to manifest themselves at puberty; but these are by no means sufficient in themselves to establish such an improbable theory as that of Beaunis, and inferentially of Ellis; the manner in which these undeniable reciprocities of action are exerted being readily explainable by the influence of mutual engorgement, and the related neurophysiology of the parts.