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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1798 Excerpt:... 123 Remarks on Dr. Priestley's Experiments and Observations relating to the Analysis of Atmospherical Air, and his Considerations on the Doctrine of Phlogiston and the Decomposition of Water. By Theophilus Lewis Rupp. 1 he high rank of Dr. Priestley in the philosophical world entitles his writings to the greatest attention; and, it is with much diffidence I venture to lay before this society a few observations on a late publication of this gentleman, entitled " Experiments and Observations relating to the Analysis of Atmospherical Air; and Considerations on the Doctrine of Phlogiston and the Decomposition of Water." The general arguments in support of the new chemical theory, and against the doctrine of phlogiston are so well known; and (to judge by their effect) so well understood, as to require neither repetition nor elucidation. I shall therefore confine myself to the consideration of the particular arguments contained in that publication. The intention of the first part of it is to shew, that in every case of the diminution of atmospherical air, which the antiphlogisdans ascribe to simple absorption, there is emitted some substance; and that this substance is the same which has been called phlogiston. That a mixture of iron-filings and sulphur with a little water (if it be continued in the air after the diminution has advanced to its maximum) occasions an increase of the quantity, by an addition of inflammable air, is easily accounted for. In this instance, as in many others of the same nature, the attraction of the iron to sulphuric acid increases the attraction of the sulphur to oxygen. That of the atmospherical air, which surrounds the mixture, is absorbed; and when this is effected, the attraction of the sulphur and iron still continuing, the water...