( *1 ) 
I poured off this Water as gently as I could, to the 
end that the long Particles which I had dilcovered by 
my Mifcrofcope, might remain id the Glafs and then 
I poured upon them four times as much Rain Water as 
there had been Aqua fortis before iB the fame place, to 
the end that the Salt Particles, which were ftill in the 
Glafs, might go over to the Water : Then I. drew this 
Water off again, and pour'd on frelh, and then view’d 
the afore-mentioned Particles thro’ my Microfcope, and 
obferv’d ’em in great Numbers flicking to the tides of 
the Glafs 5 but found, that thofe which had been as 
clear as Chryftal before, had loft a great deal of their 
Tranfpareney, and affumed a pale red Colour, which 
from time to time grew redder 5 and after fome Hours 
the Colour was fo deep that it appeared blackilh, at ^ 
leaft it appeared fo to me, having no manner of Tran- 
fparency, and where the Particles lay thick together, 
they appeared to the naked Eye like a whitiGh Mat- 
ter. srf 
I likewife pour’d off very gently the Aqua forth from 
another Glaf% in which were a great Number of thefe 
long Chryftalline Particles, and then turn’d the Glafs up- 
fide down, to the end, that that little Water which re- 
main’d in it might be drain’d out 5 by which means a 
great Number of the faid Particles remained flicking to the 
(ides of the Glafs 5 and forafmuch as I had pour’d no 
Rain Water upon them, they prefervkl their Yranfpa- 
rency : And you muft ofcferve, that the afore-memion’d 
Coagulated Particles are but a very fmall part of the 
Silver which was thrown into the Aqua fortis. 
As often as I diffolved the Silver in Aqua fortis , I 
could not difeover any Diamond-like Figures worth 
fpeaking of, but only feveral very long Particles, fuch 
as I have deferibed by Figure 1, 2, 3, 4, 5. Upon which 
I confidered whether my Aqua forth was good ; but was 
informed, that it was the fame that was fold not only 
D to 
4 
