( 28(5 ) 
carefully, and all the Gold will pafs into the ^Ethere- 
al .Liquor, and the vRegia, robbed of all its Gold, 
will prefently depofitethe Copper at the Bottom of the 
Veifel as a white Powder, which turning of a green 
Colour, contains the Portion of Copper wherewith 
the Gold was adulterated. The ^Ether will fwim like 
Oil on the Surface of the corrolive Waters. The Ex- 
periment deferves the utmoft Attention ; for here the 
heavieft of all Bodies, Gold, is attraded by this 
very light iEtlier, or (whereas the Air, which with 
I a common Force prefTes alike all Bodies, is here ex- 
cluded, and the Ather it felf encompalTes and touches 
the Surface of the Water) the Gold, by the Force of 
its Gravity, as by an Impulfe, would defcend from 
thence ^ or laftly, this Phoenomenon is owing to a 
certain Harmony and Similitude of both of them. 
{Succeeded.) 
VII. Aether then is certainly the mofl noble, effica- 
cious and ufeful Inftrument in all Chymiftry and Phar- 
macy, Uhi- enim ignis potentialis^ ihi aBuali non 
opus ej : , inafmuch as Efiences and effential Oils 
are extra ded by it immediately, without fo much 
as the Mediation of Fire, from Woods, Barks, Roots,. 
Herbs, Flowers, Berries, Seeds, from Animals, 
and their Parts too. Thus from Caftor, by a certain 
Manufadion, may be prepared an Oil fweeter than that 
of Cinnamon, and alfo the true Oil of Saffron, of 
wonderful Efficacy ; and all by this particular Enchy- 
rafis, without the Help of Fire or Diflillation. For 
an Example of our Method, take Mint, Sage, or Orange- 
peels, Cinnamon, Ssfc, or all thefe together, cut and 
bottle them , pour upon them a Spoonful or 
two of the ^Ethereal Liquor, and after it has flood 
an 
