they address themselves at once to the intelligence of man, and they place him in immediate relation to and in deepest sympathy with the Intelligence which gave them birth. He that formed the eye of man to see, and the heart of man to admire beauty, shall He not delight in it? He that gave the hand of man its cunning to create beauty, shall He not himself work for it? And if man can and does combine both "ornament" and "use" in one and the same implement or machine, why should not the Creator of the world do the same? "When the savage carves the handle of his war-club, the immediate purpose of his carving is to give his own hand a firmer hold. But any shapeless scratches would be enough for this. When he carves it in an elaborate pattern, he does so for the love of ornament, and to satisfy the sense of beauty." And so "the harmonies, on which all beauty depends, are so connected in nature that _use_ and _ornament_ may often both arise out of the same conditions."[269] [Footnote 269: Duke of Argyll, "Reign of Law," p. 203.] The "true naturalist," therefore, recognizes two great principles pervading the universe--_a principle of order_--a unity of plan, and _a principle of special adaptation_, by which each object, though constructed upon a general plan, is at the same time accommodated to the place it has to occupy and the purpose it has to serve. In other words, there is _homology of structure_ and _analogy of function_, conformity to _archetypal forms_ and _Teleology of organs_, in wonderful combination. Now, in the Materialistic school, it has been the prevalent practice to set up the unity of plan in animal structures, in opposition to the principle of Final Causes: Morphology has been opposed to Teleology. But in nature there is no such opposition; on the contrary, there is a beautiful co-ordination. The same bones, in different animals, are made subservient to the widest possible diversity of functions. The same limbs are converted into fins, paddles, wings, legs, and arms. "No comparative anatomist has the slightest hesitation in admitting that the pectoral fin of a fish, the wing of a bird, the paddle of the dolphin, the fore-leg of a deer, the wing of a bat, and the arm of a man, are the same organs, notwithstanding that their forms are so varied, and the uses to which they are applied so unlike each other."[270] All these are homologous in structure--they are formed after an ideal archetype or model, but that model or type is variously modified to adapt the animal to the sphere of life in which it is destined to move, and the organ itself to the functions it has to perform, whether swimming, flying, walking, or burrowing, or that varied manipulation of which the human hand is capable. These varied modifications of the vertebrated type, for special purposes, are unmistakable examples of final causation. Whilst the silent members, the rudimental limbs instanced by Oken, Martins, and others--as fulfilling