As regards this very important subject of health, or the body, and the degree to which it can be controlled by the mind or will, it is to be observed that of late years physiologists are beginning to observe that all "mental" or corporeal functions are evidently controlled by the same laws or belong to the same organization.

If "the emotions, say of anger or love, in their more emphatic forms, are plainly accompanied by varying changes of the heart and blood-vessels, the viscera and muscles," it must follow that changes or excitement in the physical organs must react on the emotions.

"All modes of sensibility, whatever their origin," says LUYS, "are physiologically transported into the sensorium.

From fiber to fiber, from sensitive element to sensitive element, our whole organism is sensitive; our whole sentient personality, in fact, is conducted just as it exists, into the plexuses of the _sensorium commune_." Therefore, if every sensation in the body acts on the brain by the aid of secondary brains or ganglions, it must be that the brain in turn can in some way act on the body.

And this has hitherto been achieved or attempted by magicians, "miracle-mongers," thaumaturgists, mesmerists, and the like, and by the modern hypnotizer, in which we may observe that there has been at every step less and less mysticism or supernaturalism, and a far easier process or way of working.