For fifteen years the donkey has been ridden by Keely with the cabbage on a pole held just in front of his hungry mouth, and now the donkey is told that the cabbage after all is only sham, but that the new cabbage is real, and if he will only consent to run fast enough and far enough he certainly will reach it and grow fat. It would seem that the donkey ought to pause and consider before he begins another fifteen-year race after perpetual motion, and it is here proposed to assist him in his reflections by a few facts. More than fifteen years ago Keely made himself known to the public by exhibiting an apparatus in which a great pressure was manifested, which, he said, resulted from the discovery by him of a new force the nature of which was his secret. Several people, as usual, were astonished at the show, and bought and paid for shares in the patent which was promised. To give colour to the pretence, Keely applied for a patent before 1876, but did not assign to the purchasers their shares; whereupon some of them protested against the issue of the patent unless their shares were recognized in the grant. The Patent Office replied to these protests that it could not recognize the rights claimed unless there was a written assignment filed in the office, which the claimants did not have. The Commissioner, however, called upon Keely to furnish a "working model" of his invention, which, of course, he could not do, and his application was rejected. The specification and drawings of this apparatus show a very silly form of the common perpetual motion machine, of which there are thousands. It was open to the public for some years, when, under a new rule of the office, it, along with all other rejected applications, was withdrawn from inspection; but it is in the office, together with the protests of those who had paid Keely for a share in it. I examined it years ago, and informed Mr. Lamson, and others of Keely's stockholders, of it. Mr. Lamson told me that he had charged Keely with deception, because he had always said that he never had applied for a patent, and that Keely explained it by saying that he had purposely concealed his invention from the Patent Office in that application to which he had made oath.