X l 4 l 7 ) 
When the Glafs T ube where the Pearls lay began to 
melt, I threw thofe pieces of them that were burft with 
•heat into dean Rain Water, and after they had been 
feveral Hours in the faid Water, I poured it upon a clean 
Glafs Plate, that it might evaporate 5 and that being done, 
I difcovered abundance of Salts tha t were coagulated in 
Rofe-like Figures of feveral Magnitudes, and each of 
them different, infomnch that 1 could not prefcribe any 
particular figure, only that I faw afterwards lying a great 
number of very (lender and long Salt- Particles, fome of 
which exceeded the others both in thinnefs and length $ 
upon another Glafs there were a great number of 
Salt Particles coagulated in Figures like Branches and 
■Boughs of Trees, which was a very agreeable Objeft, but 
there was nothing more remarkable therein. 
I took about two thirds of the faid Water and mingled 
it with one third of my Blood, which I drew out of my 
Thumb with the prick of a Needle 5 and having fe 
mingled it, I placed it before a Microfcope, but could 
not difcover that the Globules of Blood were coagulated 
in any other manner than when Blood is mingled with 
common Water. 
The pieces of Pearl that came out of the Glafs, and 
had been thrown into the Water, as is before mentioned, 
were not White, butBlackilh; whereupon I caufed the 
Water, in which thofe Fragments lay, to evaporate, and 
they being dry, I put them upon fuch a ftrong Fire of 
Charcoal, that they turn’d White again 5 whereupon I 
threw them again into clean Rain Water, and thereupon 
obferved, that a great many Particles of them feparated 
themfelves from one another, and funk to the bottom, in 
appearance, like white Chalk. 
Thefe Fragments of Pearl having lain a little time in 
Water, I obferved a Scum to overfpread the fame, which 
in my foregoing Obfervations I had not feen $ and after 
a few Hours, that Scum grew thicker, and then I per- 
14 Y ceiv’i 
