Keely's system, should he live to complete it, will show that nature works under one law in everything; that discord is disease, that harmony is health. He believes that nervous and brain disorders are curable; but he will never have the leisure to enter this field of research himself, and it will be left for physicians to pursue their experiments to that point where they shall be able to decide whether he is right or wrong. This is why I seek to interest medical men in Keely's belief; his theories of latent energy he is able to handle without help, and to demonstrate a solid foundation for them on facts. "Nothing can lie like a fact," said Velpeau. But nature's laws are infallible facts, and the facts referred to by Velpeau are of the order of the fallible ones enunciated by science, such as "The atom is indivisible." "The atom is infinitely divisible," says Keely, repeating Schopenhauer's words, whose writings I dare say he has never read. Professor George Fr. Fitzgerald, of Trinity College, Dublin, in closing a lecture delivered before the British Association last March, on "Electro-magnetic Radiation," enunciates a possible theory of ether and matter. This hypothesis, he says, explains the differences in nature as differences of motion. If it be true, ether and matter--gold, air, wood, brains--are but different motions. You will be able to judge of the marvellous mechanism invented by Keely, for his researches, when I tell you that by his demonstrations with these instruments, he is able to place this hypothesis in the rank of theories, boldly announcing that all motion is thought, and that all force is mind force. With a clearness that characterizes his great brain he has plunged through the deep and broad questions surrounding the mechanism of the universe, and he claims, on behalf of science, as did the late Provost Jellett of the British Association, "the right to prosecute its investigations until it attains to a mechanical explanation of all things." In this lecture Professor Fitzgerald, commenting upon Professor Hertz's experiments in the vibration of ether waves, says: "If there is reason to think that any greater oscillation might disintegrate the atom, we are still a long way from it." Does not this statement border on an admission that the atom may be divisible? Those who are pursuing their researches in this field are farther off than they know from the great central truth which Faraday did not live long enough to reach, although conjectured by him.