Take, for instance, the dog. The dog is a reformed bandit. It is a revised wolf or jackal. It has been completely transformed by human selection; indeed, it may be said that the dog in the last ten or fifteen thousand years has made greater advances in sagacity and civilisation than any other animal, scarcely even excepting man. Man has made wonderful strides along purely intellectual lines, but in the improvement of his emotions he has not been so successful. The rapid development of the dog in feeling and intelligence has no doubt been due to the fact that his utility to man has always depended largely on his good sense and fidelity, and man has persistently emphasised these qualities in his selection. Fierceness and distrust—two of the most prominent traits in the psychology of the primitive dog—have been entirely eradicated in the higher races of dogs. There is not anywhere on the face of the earth a more trustful, affectionate, and docile being than this one-time cut-throat. Whether the dog has been derived from the wolf or from some wild canine race now extinct, or from several distinct ancestors, he must have had originally a fierce, distrustful, and barbaric nature, for all of the undomesticated members of the dog family wolves, foxes, jackals, etc.—have natures of this sort. There are about 175 different races of domestic dogs. They represent almost as great a range of development as do the races of men. Some of them are exceedingly primitive, while others are highly intelligent and civilised. The Eskimo dogs are really nothing but wolves that have been trained to the service of man. They look like wolves, and have the wolf psychology. They are not able to bark, like ordinary dogs; they howl like wolves, and their ears stand up straight, like the ears of all wild Canidae. Some of the more advanced of the canine races—like the sheep-dogs, pointers, and St. Bernards—are animals of great sympathy and sensibility. When educated, these dogs are almost human in their impulses and in their powers of discernment. In patience, vigilance, and devotion to duty, they are superior to many men. At a word, or even a look, from its master, the loyal collie will gather the sheep scattered for miles around to the place designated, and do it with such tact and expedition as to command admiration. It has been said that if it were not for this faithful and competent canine the highlands of Scotland would be almost useless for sheep-raising purposes, because of the greater expense that would be entailed if men were employed. One collie will do the work of several men, and will do it better, and the generous-hearted creature pours out its services like water. It requires no compensation except table refuse and a straw bed. In South America sheep-dogs are trained to act as shepherds and assume the whole responsibility of tending the flock. ‘It is a common thing,’ says Darwin, ‘to meet a large flock of sheep guarded by