What this dog would have done if placed, utterly hungry, in a box from which he could only liberate himself by stepping on a platform or turning a wooden button, I do not know. LOGAN G. MCPHERSON. PITTSBURGH, _August 3, 1899._ MR. FREDERIC D. BOND, of 413 South Forty-fourth Street, Philadelphia, writes: Of the accuracy of Dr. Thorndike's experiments I have no doubt, but certain facts connected with them seem to deprive the observations of much of their relevance. Dr. Thorndike states that he arranged his experiments to give reasoning every chance to display itself, if it existed, and to observe those in which the acts required and the thinking involved were not far removed from the acts and feelings of ordinary animal life. Of these experiments one of the chief was to determine whether and in what way a cat would escape from a box opening by turning a button. Now, I submit that in this and the succeeding experiments the conditions Dr. Thorndike fancied to exist by no means did so. Simple as the release of a door by a button seems to us, the apparent simplicity arises merely from our empirical knowledge of what does happen in such a situation. Actually to think out the rationale of the matter, as an animal having no experience either personally or from heredity would have to do, involves very complex mental processes. The environment of a human being is vastly different from an animal's, though of this fact we constantly lose sight in reasoning; of mechanical appliances and principles, for example, an animal knows nothing, and yet we are too apt to suppose it regarding the world with a store of ancestral and individual experiences utterly foreign to it; and then, on its failing to do what, in the light of such experience, seems to us easy, we proceed to call into question its possession of reason.... That the cats did finally learn to escape shows, according to Dr. Thorndike, "the wearing smooth of a path in the brain, not the decisions of a rational consciousness." May I ask Dr. Thorndike what possible reason could a cat have to suppose that what happened once must needs happen again? Does Dr. Thorndike fancy his own knowledge of a million like matters was acquired by reason, and not empirically elaborated by processes of exactly the same sort as the cats went through? Let this experiment be tried on a healthy infant of two years, and I am of the opinion that the results would be the same as with the cat; yet the infant undoubtedly carries on "thinking processes similar, at least in kind, to our own," which Dr. Thorndike implicitly denies to his cats.