Some new experiments, with observations upon heat, clearly shewing the erroneous principles of the French theory : also, a letter to Henry Cavendish, containing some pointed animadversions; with strictures upon some late chemical papers in the Philosophical Transactions, and other remarks / by Robert Harrington.

  • Harrington, Robert, 1751-1837.
Date:
1798
Catalogue details

Licence: Public Domain Mark

Credit: Some new experiments, with observations upon heat, clearly shewing the erroneous principles of the French theory : also, a letter to Henry Cavendish, containing some pointed animadversions; with strictures upon some late chemical papers in the Philosophical Transactions, and other remarks / by Robert Harrington. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    [ six !! fluence upon the acid, I took a tube of glaft whofe diameter was very fmall ; into this tube I introduced a golden wire which nearly lillcd it: having placed it near half way into the tube, juft at its point I melted the glafs around it, fo that it was impervious to air and water; then, at the other end of it 1 dropt into the tube a few drops of the nitrous acid, and introduced another golden wire; and when the acid was all concentra* ted, in the middle, between the two gold wires, I melted the glafs round the laft in- troduced wire in the fame manner as the firft. Now here I had the acid placed be- tween the twm wires, and the glafs clofely melted near the point of the wdres, fo that there was no palfage for the acid. Upon pafling, for a long time together, the cleftric fire through the acid, I found, upon exami- nation, it was principally dillipated. That the pafl'ages were thoroughly clofed upon the wires, and that the acid could not pafs through any opening, I was certain, by examining each end of the tube, there being not the lead acid. Therefore, it muft have united with the fire and pafTcd with it through the body of the glafs; the bell examination of the acid ia to fee what proportion of alkali it will laturate before and after the opera- tion. In Count Rumford’s experiments, on the cxplofion of gunpowder, we fee how very