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Journal of Natural Philosophy, Chemistry, and the Arts (1801)
Journal of Natural Philosophy Chemistry and the Arts - 1801 Author:William Nicholson Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: with fo much avidity. Neither need I to mention that the nitrous acid made ufe of in th receipt was equally capable of difengaging the fluoric acid, though we uf... more »ually make ufe of the fulphuric. There remains, therefore, little doubt, that the art of etching on glafs does not entirely belong to the moderns, or to deny that the ancients were altogether unacquainted with it, would be doing them an injuftice. It feems rather, that this art belongs to the difcoveries which were made in thofe times, in which men were little inclined to tranfmit an account of their inventions to pofterity, and thus this art mud have been forgotten or loft. Scheele difcovered the fluoric acid, and re-invented the art of etching on -glafs in the year 1771. But had Swanhard been able to purfue properly what either accident, or ingenuity prefented to him, he might have enriched the arts, with a difcovery which acquired great reputation to this Swedifli philofopher one hundred years after. FREDERIC ACCUM. A Defcription of a new Injlrument called the Bla/J Ventilator. Invented by J. W. Boswell. AT would be fuperfluous to offer any arguments to the cultivators of natural philofophy, refpecling the importance of any difcovery in that fcience. It is fuflicient to announce it to thofe who fo well know, that no operation of nature is unimportant; and that although the firft perfon to whom a fad may occur, may not be able to point out all the advantages which may arife from it, yet others of more difcernment coming after him, may improve upon his ideas, and perhaps ufe it for purpofes of much higher importance. What Dr. Hales has written of the great confequence of the fubject of ventilation to health, and the prefervation of the food of man, renders it unneceflary to expatiate on the importance of.a...« less