It is Professor Leidy's and Dr. Willcox's second strings, to their bows, which will enable you to secure to science the richest quarry that has ever been within its reach. I know that the experience of Professor Rowland, as related by him, must have had the effect to prejudice you against Mr. Keely. Professor Fitzgerald writes to me on this subject: "I am sorry that Mr. Keely did not cut the wire, wherever Professor Rowland asked to have it cut, because it will undoubtedly be said that he had some sinister reason for not doing so, whatever his real reasons were; but, of course, when one cuts a bit off a valuable string one prefers naturally to cut the bit off the end, as Keely did, rather than out of the middle." This very wire which Mr. Keely did cut at one end, twice, for Professor Rowland, one of the pieces falling into my hand, is now in Professor Fitzgerald's possession. It was the offensive manner of Professor Rowland when he seized the shears, telling Keely it was his guilty conscience which made him refuse to cut the wire, and that it must be cut in the middle, which put Keely on the defensive, causing him to refuse to allow Professor Rowland to cut it. It would seem that the professor in the Johns Hopkins University, from his remarks on that occasion, thought, instead of an experiment in negative attraction, that Keely was imposing upon the ignorant by giving a simple experiment in pneumatics, familiar to all schoolboys. Professor Rowland did not realize how low he was rating the powers of discernment of a professor in the University of Pennsylvania who had witnessed Keely's experiments again and again, when his instruments or devices were in perfect working order. Mr. Keely, who was ambitious to show Professor Rowland that his disintegrator had no connection with any concealed apparatus, had suspended it from the ceiling by a staple. The hook had given way, and the jar to the instrument in falling to the floor disarranged its interior construction on that day. To those who have not witnessed any of Keely's experiments, under favourable conditions, his theories naturally seem vague speculations; but not one theory has Keely put forward, as a theory, which he has not demonstrated as having a solid foundation in fact. Some of our men of science once settled the problem of the origin of life to their own satisfaction, only to learn in the end that speculation is not science; but this very problem is one the solution of which Keely now seems to be approaching. It would become a matter of easy analysis, writes Keely, if the properties governing the different orders of matter could be understood in their different evolutions. The force of the mind on matter is an illustration of the power of the finer over the crude, but the law making the crude forms of matter subservient to the finer or higher forms, is an unknown law to finite minds.