Willcox is best set down in their own words:-- "April 8th, 1890. "After having had the opportunity of witnessing a series of experiments made by Mr. John Keely, illustrative of a reputed new motor power, it has appeared to me that he has fairly demonstrated the discovery of a force previously unknown to science. I have no theory to account for the phenomena observed, but I believe Mr. Keely to be honest in his attempt to explain them. His demonstrations appear to indicate great mechanical power, which, when applied to appropriate machinery, must supersede all ordinary appliances. "Joseph Leidy." "Philadelphia, April 8th, 1890. "After having witnessed, on several occasions and under favourable circumstances, Mr. Keely's experiments in what he terms sympathetic vibration, I am satisfied that he has made new and important demonstrations in physical science. He has made manifest the existence of natural forces that cannot be explained by any known physical laws, and has shown that he possesses over them a very considerable control. "James M. Willcox." Shortly after these announcements were made public, with the consent of the writers, Anglo-Austria contained two papers on the subject, from which, principally, the article on Etheric Philosophy is taken. S. Zolver Preston, in his "Physics of the Ether," says: "A quantity of matter representing a total mass of only one grain, and possessing the normal velocity of the ether particles, that of a wave of light, encloses a state of energy represented by upward of one thousand millions of foot tons. Or the mass of one single grain contains an energy not less than that possessed by a mass of 70,000 tons, moving at the speed of a cannon ball (1200 feet per second); or, otherwise, a quantity of matter, representing a mass of one grain, endued with the velocity of the ether particles, encloses an amount of energy which, if entirely utilized, would be competent to project a weight of 100 tons to a height of one mile and nine-tenths of a mile."