"My researches lead me to believe that hydrogen carries heat in a latent condition, but I do not believe it will ever be possible to construct a device which can vibrate hydrogen with a frequency sufficient to liberate the latent heat from its interstitial structure."

All of Keely's experiments were unaccompanied with evolution of heat. Therefore the laws of vibration and the experiments set forth herein probably contain no possible inkling as to the liberation of this all-potent source of mechanical energy. Had he discovered this alone his perfect engine would have unfailingly resulted. The likelihood exists that the discovery of the nature and laws of heat will mark a long, long step toward our understanding of the mystery of the Universe and the constitution of matter. Heat is very likely the third dimension which brings about the permanence of form in substance. It is probably the essence of cohesion. [Editor's note: Keely undoubtedly understood the nature of heat far beyond the our grasp even today in 1986, Mr. Snell's above opinion is in error.]