O.M. Sufficient to show that a dumb animal’s mental machine is just the same as a man’s and its reasoning processes the same? I will illustrate further. If you should hand Mr. Edison a box which you caused to fly open by some concealed device he would infer a spring, and would hunt for it and find it. Now an uncle of mine had an old horse who used to get into the closed lot where the corn-crib was and dishonestly take the corn. I got the punishment myself, as it was supposed that I had heedlessly failed to insert the wooden pin which kept the gate closed. These persistent punishments fatigued me; they also caused me to infer the existence of a culprit, somewhere; so I hid myself and watched the gate. Presently the horse came and pulled the pin out with his teeth and went in. Nobody taught him that; he had observed—then thought it out for himself. His process did not differ from Edison’s; he put this and that together and drew an inference—and the peg, too; but I made him sweat for it. Y.M. It has something of the seeming of thought about it. Still it is not very elaborate. Enlarge. O.M. Suppose Mr. Edison has been enjoying some one’s hospitalities. He comes again by and by, and the house is vacant. He infers that his host has moved. A while afterward, in another town, he sees the man enter a house; he infers that that is the new home, and follows to inquire. Here, now, is the experience of a gull, as related by a naturalist. The scene is a Scotch fishing village where the gulls were kindly treated. This particular gull visited a cottage; was fed; came next day and was fed again; came into the house, next time, and ate with the family; kept on doing this almost daily, thereafter. But, once the gull was away on a journey for a few days, and when it returned the house was vacant. Its friends had removed to a village three miles distant. Several months later it saw the head of the family on the street there, followed him home, entered the house without excuse or apology, and became a daily guest again. Gulls do not rank high mentally, but this one had memory and the reasoning faculty, you see, and applied them Edisonially. Y.M. Yet it was not an Edison and couldn’t be developed into one. O.M. Perhaps not. Could you? Y.M. That is neither here nor there. Go on.