Up to this time his researching devices had been principally of his own construction; but from the time that he devoted himself to the line of research, marked out for him to follow, he was supplied with the best instruments that opticians could make for him after the models or designs which he furnished. If, from 1882 to 1888, he walked with giant strides along the borders of the domain that he had entered, from 1888 to the present time he has made the same progress beyond its borders. From the hour in which he grasped "the key to the problem," the "principle underlying all," the dawn of "a new order of things," broke upon his vision, and he was no longer left at the mercy of the genii whom he had aroused. In July, 1888, the T.P.S. published the succeeding paper, which had a wide circulation. KEELY'S SECRETS. 1888. Part I. Science is to know things.--Herodotus. Knowledge is developed by experience from innate ideas.--Plato. Truth is not attained through reflection, but through immediate intuition. "We neither originate thought nor its form.--Aryan Teachings. It may be said that if all things come from only one cause or internal source, acting within itself, then motion and matter must be fundamentally and essentially one and the same, and we may look upon matter as being latent force and upon force as being free matter.--Franz Hartmann, M.D. John Worrell Keely--the discoverer of compound inter-etheric force, as the result of more than twenty years of persistent effort to apply this force to the operation of machinery has, at last, been enabled to produce partial continuity of motion in his engine; but, up to this time, he has not so mastered this subtle force as to control reversions. The development of his various discoveries has been one uninterrupted work of evolution, reaching, within the last year, he thinks, the sphere of perfect vibratory sympathy, both theoretically and practically. The proof of this is found in the fact that he now transmits vibrations along a wire, connected at one end with the vibratory machine which is the source of power, and at its other end with the engine or cannon, as the case may be, which is operated by such vibratory power. Until recently, comparatively speaking, Keely stored force, as he generated it, in a receiver; and experiments were made by him in the presence of thousands, at various times, for the purpose of testing the operations of this force, liberated in the presence of his audience and stored up in this small receiver. The editor of the Scientific Arena thus describes what took place at one of these exhibitions, when he was present:--"The confined vapour was passed through one of the small flexible tubes to a steel cylinder on another table, in which a vertical piston was fitted so that its upper end bore against the underside of a powerful, weighted lever. The