O.M. If Edison were in trouble and a stranger helped him out of it and next day he got into the same difficulty again, he would infer the wise thing to do in case he knew the stranger’s address. Here is a case of a bird and a stranger as related by a naturalist. An Englishman saw a bird flying around about his dog’s head, down in the grounds, and uttering cries of distress. He went there to see about it. The dog had a young bird in his mouth—unhurt. The gentleman rescued it and put it on a bush and brought the dog away. Early the next morning the mother bird came for the gentleman, who was sitting on his veranda, and by its maneuvers persuaded him to follow it to a distant part of the grounds—flying a little way in front of him and waiting for him to catch up, and so on; and keeping to the winding path, too, instead of flying the near way across lots. The distance covered was four hundred yards. The same dog was the culprit; he had the young bird again, and once more he had to give it up. Now the mother bird had reasoned it all out: since the stranger had helped her once, she inferred that he would do it again; she knew where to find him, and she went upon her errand with confidence. Her mental processes were what Edison’s would have been. She put this and that together—and that is all that thought _is _—and out of them built her logical arrangement of inferences. Edison couldn’t have done it any better himself. Y.M. Do you believe that many of the dumb animals can think? O.M. Yes—the elephant, the monkey, the horse, the dog, the parrot, the macaw, the mocking-bird, and many others. The elephant whose mate fell into a pit, and who dumped dirt and rubbish into the pit till bottom was raised high enough to enable the captive to step out, was equipped with the reasoning quality. I conceive that all animals that can learn things through teaching and drilling have to know how to observe, and put this and that together and draw an inference—the process of thinking. Could you teach an idiot the manual of arms, and to advance, retreat, and go through complex field maneuvers at the word of command? Y.M. Not if he were a thorough idiot. O.M. Well, canary-birds can learn all that; dogs and elephants learn all sorts of wonderful things. They must surely be able to notice, and to put things together, and say to themselves, “I get the idea, now: when I do so and so, as per order, I am praised and fed; when I do differently I am punished.” Fleas can be taught nearly anything that a Congressman can. Y.M. Granting, then, that dumb animals are able to think upon a low plane, is there any that can think upon a high one? Is there one that is well up toward man? O.M. Yes. As a thinker and planner the ant is the equal of any savage race of men; as a self-educated specialist in several arts she is the superior of any savage race of men; and in one or two high mental qualities she is above the reach of any man, savage or civilized!