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Updated: May 29, 2025
Here the compression of Girty's lips, and a knitting together of his shaggy brows, warned Ella she was treading on dangerous ground, and she quickly added: "All of us are liable to err; and there may be circumstances, unknown to others, that force us to be, or seem to be, that which in our hearts we are not; and to do acts which our calm moments of reason tell us are wrong, and which we afterwards sincerely regret."
An air cylinder 18" in diameter filled with free air once every half second, and at each stroke compressing the air to 60 pounds, and thereby producing 309 degrees of heat, is thus, by means of water injection, cooled to an extent hardly possible with mere surface contact. The specific heat of water being about four times that of air, it readily takes up the heat of compression.
"This process of consolidation must have progressed from above downward, with the increase of the expansive force in the lower strata, commencing from the upper surface, which, its temperature being lowest, offered the least resistance to the force of compression.
The leading principle of the calorie engine consists in producing motive-power by the employment of the expansive force of atmospheric air instead of that of steam; the force being produced by compression of the air in one part of the machine, and by its dilatation by the application of heat in another part.
In her he would find an old friend of Phillida's who was pretty sure to be free from brain-fogs. He quickly took a resolution to see her. It was too late in the afternoon to walk uptown. On a fine Sunday like this the street cars would not have strap-room left, and the elevated trains would be in a state of extreme compression long before they reached Fourteenth street.
All the valves are closed whilst the piston moves inwards, compressing the gases, until at the end of this stroke, and at the instant of maximum compression, the highly explosive charge is fired by means of the hot tube or an electric spark, as the case may be. Commencement of first out-stroke suction or charging stroke.
Look you," he resumed, with a very slight compression of his lip, and a still slighter movement in his chair, "look you, this is no question of ifs and buts! it is a question of must and shall, a question of existence to you and to me.
When the aneurysm presses on the vertebræ and erodes them, the symptoms simulate those of spinal caries, particularly if, as sometimes happens, symptoms of compression paraplegia ensue. In its growth the swelling may press upon and displace the adjacent viscera, and so interfere with their functions.
In regard to the extent to which the compression of air has been actually carried, he tells us that 'Brockhaus says that air has as yet been compressed only into one-eighth of its original bulk. Is it possible that a writer on Meteorology is unacquainted with the well-known experiments of Dulong and Arago, and the more recent ones of Regnault, in which the compression was three times the amount here stated, or that he requires to be referred to those of Natterer, who, by a powerful condensing apparatus, has lately compressed seven hundred and twenty-six volumes of air into a single volume?"
Hence, for the explanation of those natural appearances, which are so general, no further conditions are required, than the supposition of a sufficient intensity of subterraneous fire or heat, and a sufficient degree of compression upon those bodies, which are to be subjected to that violent heat, without calcination or change.
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