The man who can demonstrate the existence of an unsuspected and unknown force has a right, in the absence of demonstrative proof to the contrary, to form his own theory of its origin, and to make it the basis of his own system. Keely is looking at physical phenomena and their explanations from a point of view so different from that of the inductive school, that we hardly know how to combine the two, or show their bearings upon each other. For myself, I think now, as I thought and said in my address, that the absolutely exclusive position, taken up by Huxley, Tyndall, and the so-called Material School, is ludicrously indefensible; and that we should be as perfectly open to evidence in any direction, as we were 2000 years ago.--The Rev. H. W. Watson, D.Sc., F.R.S. So many men of learning are now holding Dr. Watson's views that the time seems to have arrived, in which the theories of Keely will receive, from those who are competent to judge of their value, the attention that they deserve. Before entering upon their merits, or setting them down for others to judge of their worth, the way must be prepared by showing the claims which they possess from their correspondence with some of the most advanced ideas of the present day, as well as with the teachings of the wisest men in past centuries. The mode which is the least laborious to accomplish this end, is by collecting what has been written and printed, which bears upon, and elucidates this subject. It is now very generally known that Mr. Keely, while pursuing a line of experiment in vibrations, "accidentally" as Edison would say, made his discovery of an energy, the origin of which was unknown to himself; and six years passed, in experiment, before he was able to repeat its production at will. In the meantime he had exhausted his resources and willingly accepted the proposal of men, who, after witnessing the operation of the energy that he was able to show with this unknown force, offered to organize a company to furnish him with the means to construct an engine to use this force as the motive power, anticipating immediate success. But discovery is one thing, invention quite another thing, and the years rolled on without Mr. Keely's being able to fulfil his promises. In 1882, which was about ten years after the company was formed, an action at law was brought against him for non-fulfilment of his contract. The Evening Bulletin of March 30th of that year thus explains, truthfully, the position. THE KEELY MOTOR. A STATEMENT FROM ONE OF THE INVENTOR'S STOCKHOLDERS.