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They did this for tens of hundreds or thousands of years, and can we expect a few coatings of the veneer that we politely call civilization, which after all is only one of our conventions that vanish in any human stress such as war, to kill out the human impulse it seems to hide? I do not know, though I have my own opinion, and probably these young people never reasoned the matter out.
When one side of the jar is charged positively, the other is charged negatively, and it was by virtue of this fact that the Leyden jar served just now as an instance in our employment of the Method of Agreement. Now it is impossible to discharge one of the coatings unless the other can be discharged at the same time.
Dulces were served and some unappetizing-looking ices, which tasted better than they looked. Cakes also were offered us, of which I picked out those which had the least mauve and yellow coatings. When we were presented with some stiff little bouquets we thought it was a signal for departure, and bade adieu to the black moire and the fast-melting ices.
He anticipated Faraday in the discovery that the electricity in a charged Leyden jar resides on the glass and not on the metal coatings. He, however, made no generalizations from this discovery. He advanced the fluid theory of electricity, recognizing clearly the dual nature of the varieties commonly called positive and negative from the mathematical symbols used to express them.
By means of this, in consequence of the isolation of the coatings by the glass, electricity can, in a dry atmosphere, be condensed, and stored up and husbanded till wanted. A series of eggs, arranged in contact and in line, give occasion to a pretty experiment.
The house was guarded by three wooden figures, "clouterly carved," and powdered with ochre or red wood; two of them, representing warriors in studded coatings of spike nails, with a looking-glass fixed in the stomach, raised their hands as if to stab each other.
Saddleworth furnishes broadcloth and kerseymeres. As a specimen of the variety of articles produced in one factory, take the following list, exhibited in the Crystal Palace by a Huddersfield manufacturer: "Summer shawls; summer coatings; winter woollen shawls; vestings; cloakings; table covers; patent woollen cloth for gloves; do. alpaca do.; do. rabbits' down do.; trowserings; stockingnett do."
Faraday made, in some sort, an equivalent discovery when he perceived that the electrical energy belongs, not to the coatings of the condenser, but to the dielectric which separates them. His audacious views revealed to him a new world, but to explore this world a surer and more patient method was needed.
Corals and shells have been pounded by the waves to calcareous sand, and each grain has been covered with successive concentric coatings of lime carbonate deposited about it from solution.
Sulphuric acid was used for the coatings, and he found them to be completely discharged by an instantaneous contact of two balls. The duration of contact would, according to some remarkable mathematical work done by Hertz in 1882, be about 0.0004 second, and even this short time sufficed to discharge them completely.
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