It is not contended that non-human beings are psychically identical with human beings. The races of men are not psychically identical with each other. The difference between the intellectual splendours of a Spencer evolving volumes of the profoundest philosophy and the mind of an Australian who cannot count six, or between the understanding of an Edison, the wizard of the electrical world, and that of the South Sea islanders, who, when Captain Cook gave them some English nails, planted them in the hope of raising a new crop, is almost infinite. The lowest races of men have neither superstition nor the power of abstract thought as have the higher races. They have a word for black stone, white stone, and brown stone, but no word for stone; for elm-tree, oak-tree, and the like, but no word for tree. As Kingsley says, ‘It is difficult to believe that a dog does not form as clear an abstract idea of a tree as these people do.’ There are human beings living in the forests of Asia, Africa, and Australasia that wander about from place to place in herds without chief, law, weapons, or fixed habitations. They go naked, mate by chance, and climb trees like monkeys. Some of these races know nothing of fire, religion, or a moral world, chatter to each other like apes, and live on such natural products as roots, fruits, serpents, mice, ants, and honey. One of these creatures, we are told, will lie flat on his front for an hour by the runway of a field-mouse, waiting for a chance to snatch up the little creature when it comes along and eat it. Dozens of such degraded races are mentioned by Blichner in his ‘Man: Past, Present, and Future,’ and by Sir John Lubbock in his ‘Origin of Civilisation.’ Non-human beings have, as a rule, neither the psychic variety nor the intensity of higher humans. And it is not contended that in language, science, and superstition they are capable of being compared with the foremost few of civilised societies, any more than savages, especially the lowest savages, are capable of such comparison. But it is maintained that the non-human races of the earth are _not_ the metallic and soulless lot of fixtures they are vulgarly supposed to be; that they are just as real living beings, with just as precious nerves and just as genuine feelings, rights, heartaches, capabilities, and waywardnesses, as we ourselves: and that, since they are our own kith and kindred, we have no right whatever, higher than the right of main strength (which is the right of devils), to assume them to be, and to treat them as if they were, our natural and legitimate prey.