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This muscular layer is very closely connected with the skin itself; it is the same in the Mollusc stem. This external chitine coat undergoes a very elaborate articulation both on the trunk and the limbs of the Articulates, and in consequence the muscular system also, the contractile fibres of which are attached inside the chitine tubes, is highly articulated.
As far back as 1850, Cohn wrote, apparently without any knowledge of what Payen had said before him: "The protoplasm of the botanist, and the contractile substance and sarcode of the zoologist, must be, if not identical, yet in a high degree analogous substances.
Thus all risk of contractile tension, which is so dangerously eminent and inherent in the case of sand-mould castings, made of so exceedingly brittle an alloy as that of speculum metal, is entirely avoided.
This motion continues until the contents of the stomach are converted into chyme, and conveyed into the first intestine, where they undergo another important change. CHYLIFICATION. As fast as chyme is formed, it is expelled by the contractile power of the stomach into the duodenum, or first intestine. It there meets with the bile from the liver, and with the pancreatic juice.
And remember that the coats of the arteries are muscular and contractile under the influence of external stimuli, acting without the help of the consciousness, or when the consciousness is in abeyance.
It is Filmer's particular merit that he perceived the way in which the contrasted and hitherto incompatible merits of balloon and heavy flying machine might be combined in one apparatus, which should be at choice either heavier or lighter than air. He took hints from the contractile bladders of fish and the pneumatic cavities of birds.
The pilot, stationed immediately below the conical prow of the space-ship, peered intently through the thick windows of crystal-clear metal which afforded unobstructed vision in every direction except vertically upward and behind him. His four huge and contractile eyes were active, each operating independently in sending its own message to his peculiar but capable brain.
It has by no means lost its contractile power, for if we apply a strong electric stimulus to it, the fatigue seems to disappear. Thus we see the functional power of a muscle has a definite limit, and in fatigue that limit is reached. A Well-Equipped Gymnasium.
A simple and logical inference from these principles led him to perceive that the will might be accumulated by a contractile effort of the inner man, and then, by another effort, projected, or even imparted, to material objects.
A row of such contractile balloons, hung over a long car which was horizontally expanded into wings, would not only allow that car to rise and fall at will, but if the balloon at one end were contracted and that at the other end expanded, and the intermediate ones allowed to assume intermediate conditions, the former end would drop, the expanded wings would be brought into a slanting condition over a smaller area of supporting air, and the whole apparatus would tend to glide downwards in that direction.
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