( 191(5 ; 1 
done in others, any Salt Particles Coagulated upon the 1 
Superficies of the Water. I 
However, I took fome more pieces of Cryftal, and 1 
plac'd em upon a Wood Coal, and the fmall remainder " 
thereof, which the Heat had not forced to fly away, I 
threw into fome clean Rain Watery and tho I could dif- 
cover no Salt Particles upon the fuperficies thereof, yet I 
took feveral times fome of the faid Water, and pour'd it 
upon the cleaned Glafles I could get ^ and after that it had 
ttood fome time both in nioift and dry Weather, I view'd 
it often, and always perceived, that there lay a great many 
Salt Particles of different figures coagulated, but could not 
difcover the exa ft figure of the moft of 'em, becaufe the 
Water did not exhale ^ but I fuppofed that there were 
Salts of two kinds therein, viz. the Salts that were already 
coagulated, and other Salts that (urrounded the aforemen- 
tioned coagulated Salts. 
I vieWd thefe Salt Particles in the afternoon, in clear 
Weather, in the month of April 5 and next day in the 
morning about 6 a Clock perceived them to be fur- 
rounded with fo many Teeming Wat^r- Particles, that one . 
would be amazed to fee it. \ 
Amongik the faid Salt Particles, when I had a verv clear f 
view of them, I obferv'd forae of them of the fame figure 
with the Cryftals, to wit, Hexangular ^ and juft as our ' 
Rock Cryftal is of an Hexangular figure, ending in points 
of the fame (hape, fo likewife had thefe coagulated Salt 
Particles two Hexangular points, as they are defcrib'd by 
Fig. 12. between L and M. 
I imagined JO my felf, that in cafe the Rock Cryftal in 
in its Coagulation had lain in fucha pofition, as not to be 
united artoth ends, but only in the middle, they would ' 
then have b^en compos'd of two Hexangular points, as we 
fee in Salt Petre, which in coagulating in the Water, and 
fixing one of its fides to any other fubftance, is not only 
Hexangular, but the ends thereof, which run into a point, 
are 
