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The fore-limbs, for instance, which once served as legs to a remote progenitor, may have become, through a long course of modification, adapted in one descendant to act as hands, in another as paddles, in another as wings; but on the above two principles the fore-limbs will not have been much modified in the embryos of these several forms; although in each form the fore-limb will differ greatly in the adult state.
"With a gesture of a fore-limb he passes one of his antennae through his mandibles as though to curl it; with his long-spurred, red-striped legs he shuffles with impatience; he kicks the empty air; but emotion renders him mute."
But I shall only touch upon those points which are absolutely essential to our inquiry. Let us turn in the first place to the fore-limb. In most quadrupeds, as in ourselves, the fore-arm contains distinct bones called the radius and the ulna. The corresponding region in the horse seems at first to possess but one bone.
But I shall only touch upon these points which are absolutely essential to our inquiry. Let us turn in the first place to the fore-limb. In most quadrupeds, as in ourselves, the fore-arms contains distinct bones called the radius and the ulna. The corresponding region in the horse seem at first to possess but one bone.
All of them had a grotesque and disquieting suggestion of an insect that has somehow contrived to mock humanity; but all seemed to present an incredible exaggeration of some particular feature: one had a vast right fore-limb, an enormous antennal arm, as it were; one seemed all leg, poised, as it were, on stilts; another protruded the edge of his face mask into a nose-like organ that made him startlingly human until one saw his expressionless gaping mouth.
But if we consider the flipper or paddle of a whale, we see that it is homologous with the fore-leg of a terrestrial mammal, and we are in the habit of saying that in the whale the fore-limb is modified into a paddle and has become adapted for aquatic locomotion. This, of course, assumes that it has become so adapted in the course of descent.
I serve up the House-fly, alive. She is accepted, without hesitation. The moment that the Fly comes within reach, the watchful Devilkin turns her head, bends the stalk of her corselet slantwise and, flinging out her fore-limb, harpoons the Fly and grips her between her two saws. No Cat pouncing upon a Mouse could be quicker. The game, however small, is enough for a meal.
Other tendons cross and become attached to the hock bones. The regions of the hind cannon and digit are practically the same as the corresponding regions of the forefoot. Name the different bones of the fore-limb; hind limb. Describe the regions of the shoulder, arm and forearm. Describe the region of the forefoot. Describe the regions of the haunch, thigh and leg.
The bite was easily avoided. It was not so easy to keep out of reach of the powerful fore-limb while endeavouring to strike a fatal blow at the neck with the long rapier-like cutting weapons carried by the hunters.
It is a bird so far as its foot and sundry other parts of its skeleton are concerned; it is essentially and thoroughly a bird by its feathers; but it is much more properly a reptile in the fact that the region which represents the hand has separate bones, with claws resembling those which terminate the fore-limb of a reptile.
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