Pythagoras taught that the same law which underlies harmonies underlies the motion of the heavenly bodies, or, as Mrs. Hughes has expressed it, "The law which develops and controls harmony, develops and controls the universe." Mr. Keely, nothing daunted by the vast extent, the stupendous "outreach" of the domain, the boundary line of which he had thus crossed, concentrated all his energies upon "the situation;" thinking thereafter, not alone of the interests of commerce as before, but of the developing of a system, which he could give to science in the same hour that he should hand over, to those whose thoughts were only on financial gain, the inventions that our age is demanding, in the interests of humanity, with the stern voice of the master necessity; a voice that never fails to make itself heard in "the voice of the people." Experiment after experiment justified his hypotheses, and converted them into theories. To keep pace with the wants of humanity, invention must now walk side by side with philosophy. It took half a century for the "Principia" of Newton to tread down the contempt and opposition that its publication met with; and now progressive knowledge is overshadowing Newton's vast attainments. Faraday, after discovering electro-magnetic conditions, as related to latent or hidden energy, did not pursue his researches far enough to establish a theory as to the mode of transference of magnetic force, though, in some of his speculations on the line of force, he hit upon truths now advanced in Keely's theories. The physicists of Faraday's time could not reach up to him. They complained of his "obscurity of language," of his "want of mathematical precision," of his "entertaining notions regarding matter and force altogether distinct from the views generally held by men of science." It is not then to be wondered at that modern physicists took up lines of research more in accordance with their own views. The experiences of one age are repeated in another age; and the same charges that were brought against Faraday are now brought against Keely; coupled with shameful attempts to prove him to be "a fraud;" a man "living upon the credulity of his victims;" "a modern Cagliostro;" "an artful pretender." The question is often asked, "Is he not an ignorant man?" Yes, so ignorant, that he knows how ignorant he is; so ignorant, that he asserts with Anaxagoras, that intelligent will is the disposer and cause of everything; and not satisfied with asserting this great truth, he has devoted the remnant of his days to finding out and demonstrating how this cause operates throughout nature. But ignorant as Keely has always confessed himself to be, he knows more of the mysterious laws of nature which hold the planets in their courses and exert their dynamic effect upon the tides, more of the "shock effect" which, brought to bear upon molecules, causes their disruption and supplies the fine fluid thus liberated,