A quiet, thoughtful-looking man once brought to Mr. Wiseacre a letter of introduction. His name was Redding. The letter mentioned that he was the discoverer of a wonderful mechanical power, for which he was about taking out letters patent. What it was, the introductory epistle did not say, nor did Redding communicate any thing relative to the nature of the discovery, although asked to do so. There was something about this man that interested Wiseacre. He bore the marks of a superior intellect, and his manners commanded respect. As Wiseacre showed him particular attention, he frequently called in to see him at his store, and sometimes spent an evening with him at his dwelling. The more Wiseacre saw of him, and the more he heard him converse, the higher did he rise in his opinion. At length Redding, in a moment of confidence, imparted his secret. He had discovered perpetual motion! This announcement was made after a long and learned disquisition on mechanical laws, in which the balancing of and the reproduction of forces, and all that, was opened to the wondering ears of Wiseacre, who, although he pretended to comprehend every thing clearly, saw it all only in a very confused light. He knew, in fact, nothing whatever of mechanical forces. All here was, to him, an untrodden field. His confidence in Redding, and his consciousness that he was a man of great intellectual power, took away all doubt as to the correctness of what he stated. For once he was sure that a great discovery had been made--that a new truth had dawned upon the world. Of this he was more than ever satisfied when he was shown the machine itself, in motion, with its wonderful combinations of mechanical forces, and heard Redding explain the principle of its action. "Wonderful! wonderful!" was now exchanged for "Humbug! humbug!" If any body had told him that some one had discovered perpetual motion, he would have laughed at him, and cried "humbug!" You couldn't have hired him even to look at it. But his natural incredulity had been gained over by a different process. His confidence had first been won by a specious exterior, his reason captivated by statements and arguments that seemed like truth, and his senses deceived by appearances. Not that there was any design to deceive him in particular--he only happened to be the first included in a large number whose credulity was to be taxed pretty extensively." "You will exhibit it, of course?" he said to Redding, after he had been admitted to a sight of the extraordinary machine.