And to
vary the Experiment a little, I try'd, that if into a Glass of Rhenish Wine
made Green by this Essence, I dropp'd an Alcalizate Solution, or Urinous
Spirit, the Wine would presently grow Turbid, and of an odd Dirty Colour;
But if instead of dissolving the Essence in Wine, I dissolv'd it in fair
Water sharpen'd perhaps with a little Spirit of Salt, then either the
Urinous Spirit of Sal Armoniack, or the solution of the fix'd Salt of
Pot-ashes would immediately turn it of a Yellowish Colour, the fix'd or
Urinous Salt Precipitating the Vitriolate substance contain'd in the
Essence. But here I must not forget to take notice of a circumstance that
deserves to be compar'd with some part of the foregoing Experiment, for
whereas our Essence imparts a Greenness to Wine, but not to Water, the
Industrious _Olaus Wormius_[23] in his late _Musaeum_ tells us of a rare
kind of Turn-Sole which he calls _Bezetta Rubra_ given him by an Apothecary
that knew not how it was made, whose lovely Redness would be easily
communicated to Water, if it were immers'd in it; but scarce to Wine, and
not at all to Spirit of Wine, in which last circumstance it agrees with
what I lately told you of our Essence, notwithstanding their disagreement
in other particulars.
Pages:
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313