Letter to Henry Lord Brougham Containing Remarks On Certain Statements in Hi
Letter to Henry Lord Brougham Containing Remarks On Certain Statements in Hi
William George Granville Vernon Harcourt
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Huygens at Paris found, that the air made by dissolving salt of tartar would in two or three days' time condense and fall down again ; but the air made by dis- solving a metal continued without condensing or relenting in the least. If you consider then how by the continual fermen- tations made in the bowels of the earth there are aerial sub- stances raised out of all kinds of bodies, all which together make the atmosphere, you will not perhaps think it absurd, that the most permanent part of th...e atmosphere, which is the true air, should be constituted of these; especially since they are the heaviest of all others, and so must subside to the lower parts of the atmosphere and float upon the surface of the earth, and buoy up the lighter exhalations and vapours to float in greatest plenty above them. Thus I say it ought to be with the metallic exhalations raised in the bowels of the earth by the action of acid menstruums ; and thus it is with the true permanent air. " These extracts show that Newton considered the hydrogen gas which Boyle had obtained from iron, and the nitrous gas which Huygens had obtained from copper, as consisting of the ultimate particles of the iron and copper themselves, brought into a state of aerial elasticity ; and further, that ap- prehending his a3therial hypothesis to be thus strengthened by experimental facts, he proceeded to generalise so boldly, as to conclude that the whole body of the inferior atmosphere may be constituted of various metallic substances, and that the power and persistence of elastic force in different kinds of air may be proportionate to the size and density of their chemical elements.
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