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Tea, which he confidered as a prefent remedy againft fevers. A 

 parcel of this he gave to me, which having left for fome hours on a 

 Iheet of paper, I found it foft, as if it was going to melt away, 

 therefore I put it into a new glafs, and poured rain water upon it, in 

 order to diilblve it entirely. 



I expofed three different portions of this water to the air, that 

 part of it might evaporate, and by this means fome particles of falts 

 became vifible, and after a few hours were expired, I faw a great 

 number of particles fwimming in the water, which were almoll all of 

 the fame fhape, namely, oblong, and terminating obliquely at the 

 extremities, as at fig. 11,0. But thefe figures were not flat, but 

 fomewhat rifmg in the middle in a fort of ridge, and fl:iarp at the 

 ends, and tranfparent like cryilals. Others of thefe faline particles 

 were not fo perfed, becaufe one half of them was fomething 

 broader than the other half, as is fliewn atj%. 12, P. 



After this water had flood about two days, I faw the faline par- 

 ticles in the place where the water was not entirely evaporated to 

 be fomewhat increafed in fize, but retaining their former Ihape. 



1 faw alfo in other parts of the liquor not evaporated, a number 

 of fmall roundifli particles, in which I could not diftinguifli any ex- 

 ad fliape, though I viewed them very narrowly and with a very 

 deep magnifier, aiid befides them an incredible number of wonder- 

 fully minute particles, the fhapes of which I was flill lefs able to 

 diftinguifli : thefe laft particles I concluded to be fo minute, that a 

 thoufand miUions of them together would not equal a large grain 

 of fand. However, upon ufing my fharpeft and greateft magnify- 

 ing microfcopes, I faw the faline particles, which, as I have faid, 

 appeared round to me, to be, for the moft part, of fix fides, and fome 

 few of them three. And among the minute particles that I law 

 in fuch incredible numbers, I was able to diftinguifli many of 

 them to be of the fliape rcprefentcd at fig. 3, F. Others were fo 

 fmall, that I could not with certainty aftign any particular figure 

 to them. 



