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Updated: June 9, 2025
It is a vitreous greenish blue, as I remember it, like those patches of the winter sky seen through cloud vistas in the west before sundown. Yet a single glass of its water held up to the light is as colorless as an equal quantity of air. It is well-known that a large plate of glass will have a green tint, owing, as the makers say, to its "body," but a small piece of the same will be colorless.
Canton's experiment, made upon a glass tube with a roughened surface, proved that if the surface of the tube were rubbed with oiled silk, vitreous or positive electricity was produced, but if rubbed with flannel, resinous electricity was produced. He discovered still further that both kinds could be excited on the same tube simultaneously with a single rubber.
The grandfather trembled from head to foot as powerfully as ossified limbs can tremble, his eyes, whose corneae were yellow on account of his great age, were veiled in a sort of vitreous glitter, his whole face assumed in an instant the earthy angles of a skull, his arms fell pendent, as though a spring had broken, and his amazement was betrayed by the outspreading of the fingers of his two aged hands, which quivered all over, his knees formed an angle in front, allowing, through the opening in his dressing-gown, a view of his poor bare legs, all bristling with white hairs, and he murmured: "Marius!"
It is made up of a long row of tiny little nerve rods, laid side by side like the keys of a piano, only there are about three thousand of them. Each one of these is supposed to respond, or vibrate, to a particular tone, or sound. Just as the retina has a lens and a vitreous humor in front of it to act upon the light, so the internal ear has an apparatus in front of it to act upon the sound waves.
Furthermore, the possibilities of damage by hemorrhage from the choroidal or retinal vessels, delayed formation of the anterior chamber and adhesion of the capsule of the lens to the wound, and the injurious effects of even slight trauma subsequent to the operation, including loss of vitreous, are increased by omitting the conjunctival flap.
This principle is that there are two distinct electricities, very different from each other, one of which I call vitreous electricity and the other resinous electricity. The first is that of glass, rock-crystal, precious stones, hair of animals, wool, and many other bodies. The second is that of amber, copal, gumsack, silk thread, paper, and a number of other substances.
I remember having seen similar balls filling a vein in transition-slate, near the castle of Schauenstein in the margravate of Bayreuth. The feldspar approximates sometimes to vitreous feldspar when disseminated in very thin laminae in a mass of granular diabasis, decomposed, and emitting a strong argillaceous smell.
He put his hat on the floor by his chair, after he sat down, and looked at March awhile with his old eyes, which had the vitreous glitter of old. eyes stimulated to sleeplessness. Then he said, abruptly, "Mr. March, how would you like to take this thing off my hands?"
The black vistas of streets were as the galleries in coal mines; the flagging, as flat tomb-stones, minus the consecration of moss, and worn heavily down, by sorrowful tramping, as the vitreous rocks in the cursed Gallipagos, over which the convict tortoises crawl.
It, too, is full of images of the "earth of the liquid and slumbering trees," the "earth of departed sunset," the "earth of the vitreous pour of the full moon just tinged with blue."
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