A course of chymistry. Containing the easiest manner of performing those operations that are in physick. With curious remarks and useful discourses upon each operation / writ in French by Nicholas Lemery ; Translated by Walter Harris.
- Nicolas Lemery
- Date:
- 1677
Licence: Public Domain Mark
Credit: A course of chymistry. Containing the easiest manner of performing those operations that are in physick. With curious remarks and useful discourses upon each operation / writ in French by Nicholas Lemery ; Translated by Walter Harris. Source: Wellcome Collection.
68/390 (page 26)
![xr x = at i fet ue . rd e eT = eS pS at =, LS See ES : 22 SSS = a - Core ol TE DR = == = == == = SE SS 5 — “= = Mb ne A M = Lie yt 2 — | AS mes La Age. e — parts of Aqua Regalis that held up the particles of Gold do grow. weak,aud having no more force £o retain them longer, they muft needs precipi- tate by their own weight. Perhaps fome may find a difficulty in compre- ending how the Volatile Spirit of Salt Armoni- that is it felf compounded of Salt Armoniack ; But there will be no difficulty at all, when they doth not fo much depend on the volatile part of the Salt Armoniack, as on the Sea-falt, that is in good ftore in it united with the Aqua Forts ; do quit the bodies they held before in Diffoluti- on, to betake themfelves to fome other: for ex- arnple, why the Aqua Regalis leaves the Gold: it was impregnated with, to give way to the Al- kali Salt. This queftion is one of the moft diffi- cult to refolve well, of any in. Natural Philo- fophy. ( 1 Neverthelefs, Ile give you my opinion of sect. . I do fuppofe that whenthe Agua Regal hath acted. upen Gold, fo as to diffolve it, the points or edges that enabled it to do fo, are fixed in the particles of Gold, But feeing that thefe lit- tle bodies are very hard, and confequently hard to: ee eS = = _ — os, Seg = —_— 4 — = - es =e =] Se = == en a a = = Oo | “es](https://iiif.wellcomecollection.org/image/b3033696x_0068.jp2/full/800%2C/0/default.jpg)