Such facts justify the biologist in regarding this element of structural difference between man and the apes as inadequate for the determination of a specific zoological classification. Nevertheless man still stands apart as the tool-maker, the tool-user, the manipulator. A comparison between the fore and hind limbs of the Chimpanzee, or other ape, leaves the observer in doubt whether to name them alike as hands or feet, both being locomotive as well as prehensile organs; whereas the difference between the hand and foot of man is obvious, and points to essentially diverse functions. The short, weak thumb, the long, nearly uniform fingers, and the inferior play of the wrist in the monkey, are in no degree to be regarded as defects. They are advantageous to the tree-climber, and pertain to its hand as an organ of locomotion; whereas the absence of such qualities in the human hand secures its permanent delicacy of touch, and its general adaptation for many manipulative purposes. The hand of man is thus eminently adapted to be the instrument for translating the conceptions of intelligent volition into concrete results. Dr. George Wilson in his fine prose poem: “The Five Gateways of Knowledge,” speaks of it as giving expression “to the genius and the wit, the courage and the affection, the will and the power of man.... The term handicraftsman or hand-worker belongs to all honest, earnest men and women, and is a title which each should covet. For the Queen’s hand there is the sceptre, and for the soldier’s hand the sword; for the carpenter’s hand the saw, and for the smith’s hand the hammer; for the farmer’s hand the plough, for the miner’s hand the spade, for the sailor’s hand the oar, for the painter’s hand the brush, for the sculptor’s hand the chisel, for the poet’s hand the pen, and for the woman’s hand the needle. If none of these, or the like, will fit us, the felon’s chain should be round our wrist, and our hand on the prisoner’s crank. But for each willing man and woman there is a tool they may learn to handle; for all there is the command: ‘Whatsoever thy hand findeth to do, do it with all thy might.’” Other animals have their implements for constructive skill, and their weapons, offensive and defensive, as parts of their organic being; and are armed, equipped, clad, and mailed by no effort of their own. But man, inferior to all in offensive and defensive appliances, is a match for his most formidable assailants by means of appliances furnished by his dexterous hand in obedience to the promptings of intelligent volition.