376 Mifcellaneous Observations, £rV. 



part- water, to which put four loths of fal am- 

 moniac, pour off the folution, fuffcr it to evapo- 

 rate, and the marcafita remains at bottom. Take 

 of this marcafite twelve loths, gold-calx, or leaf- 

 gold, two loths \ fal ammoniac, and mercury fu- 

 blimate, of each two loths ; pure running quick- 

 filver, fixteen loths ; mix all together, and fublime 

 for feven times, or fo often, till at length all come 

 to remain fixed at the bottom, and each time the 

 fublimate is again to be mixed with what remains 

 ta bottom : mix this with two loths of fal-ammo- 

 niac, and imbibe it with one pound and a half of 

 the alcali, to be defcribed below, and the whole 

 will turn to an oil. Give a gentle fire in the fur- 

 nace called Piger-Henricus, with coals, or with the 

 ]amp, for a month, and it will become dry (conge- 

 labitur.) Of this medicine take two loths to ten 

 pounds of well purified quickfilver, give a gradual 

 fire in a wind-furnace, and let it ftand for an hour 

 in flux, and it will be fixed to a gold, and tinge 

 copper and filver. The alcali for the purpofe is 

 thus prepared. Pour vinegar on alcali, 'till it come 

 to clot, or bear being made into balls, and let it 

 dry in the fun, then give a reverberating fire for 

 twenty four hours ; rub it fine, and diflblve it in 

 twice its quantity of diftilled vinegar ; diftil, co- 

 hobate with the very fame vinegar •, diftill once 

 more, and let it run, per deliquium^ in a moift 

 place, on a marble or glafs ; dry it again, and again 

 run it, the procefs is to be frequently repeated ♦, 

 and, what is furprifing! it reduces all fpirits and bo- 

 dies (fpiritus et corpora) to a water, and is a highly 

 valuable fecret. — Let who will try it for me, I can- 

 not. 



T H E 



