On the 28th of May, 1889, Mr. Keely's workshop was visited by several men interested to see and judge for themselves of the nature of his researches. Among them were Professor Leidy, of the University of Pennsylvania, and James M. Willcox, author of "Elemental Philosophy." After seeing the experiments in acoustics, and the production, storage, and discharge of the ether, Mr. Willcox remarked that no one who had witnessed all that they had seen in the line of associative vibration, under the same advantages, could assert any fraud on the part of Keely without convicting himself of the rankest folly. These gentlemen met Mr. Keely with their minds open to conviction, though with strong prejudices against the discovery of any unknown force. They treated him as if he were all that he is, keeping out of sight whatever doubts they may have had of the genuineness of his claims as a discoverer; and, in the end, all who were present expressed their appreciation of his courtesy in answering the questions asked, and their admiration of what he has accomplished on his unknown path. In doing this, they were simply doing justice to him and to themselves,--to that self-respect which leads men to respect the rights of others, and to do unto others as they would be done by. Had they questioned Keely's integrity, or betrayed doubts of his honesty of purpose, he would at once have assumed the defensive, and would have informed them that he has no wish to conduct experiments for scientists who are ready to give their opinions of his theories before having heard them propounded, or of his experiments before witnessing them. When Keely's system of "sympathetic vibration" is made known ("sympathetic seeking" Mr. Willcox would call it), it will be seen how sensitive Mr. Keely's instruments are to the vibrations caused by street-noises, to vibrations of air from talking in the operating room, to touch even, as well as why it is that, although he is willing to take apart and explain the construction of his instruments in the presence of investigators, he objects to having them handled by others than himself, after they have been "harmonized," or "sensitized," or "graduated."