To the ordinary physicist the so-called _Actio in distans_ was a hopeless stumbling-block. If he did not comprehend the transmission (as it is called) of force where there was immediate contact, he was at least perfectly familiar with the outer aspect of it as a condition of his limited experience. It needed one beyond the mere hodman of science to say with Laplace: “We are so far from knowing all the agents of nature, that it would be very unphilosophical to deny the existence of phenomena solely because they are inexplicable in the present state of our knowledge.” Accordingly mesmerism and its allied manifestations were generally abandoned to the bohemians of science, and to investigators with dogmatic bias. It was still employed as a treatment for certain ailments: and philosophers, as different as Fichte and Schopenhauer(86), watched its fate with attention. But the herd of professional scientists fought shy of it. The experiments of Braid at Manchester in 1841 gradually helped to give research into the subject a new character. Under the name of Hypnotism (or, rather at first Neuro-hypnotism) he described the phenomena of the magnetic sleep (induced through prolonged staring at a bright object), such as abnormal rigidity of body, perverted sensibility, and the remarkable obedience of the subject to the command or suggestions of the operator. Thirty years afterwards, the matter became an object of considerable experimental and theoretic work in France, at the rival schools of Paris and Nancy; and the question, mainly under the title of hypnotism, though the older name is still occasionally heard, has been for several years brought prominently under public notice.