that of reason, led on and on even to Mr. Burroughs and you and me.
There are no impassable gulfs, unless one chooses, as Mr. Burroughs does, to ignore the lower human types and the higher animal types, and to compare human mind with bird mind. It was impossible for life to reason abstractly until speech was developed. Equipped with swords, with tools of thought, in short, the slow development of the power to reason in the abstract went on. The lowest human types do little or no reasoning in the abstract. With every word, with every increase in the complexity of thought, with every ascertained fact so gained, went on action and reaction in the gray matter of the speech discoverer, and slowly, step by step, through hundreds of thousands of years, developed the power of reason.
Place a honey-bee in a glass bottle. Turn the bottom of the bottle toward a lighted lamp so that the open mouth is away from the lamp. Vainly, ceaselessly, a thousand times, undeterred by the bafflement and the pain, the bee will hurl himself against the bottom of the bottle as he strives to win to the light. That is instinct. Place your dog in a
