( i8* ) 
Greek word Bxmvt^coy explore^ becaufe it has the Pro- 
perty of the Touch'ftone, that (hews by lines drawn with 
Metals on its finooth Surface, which are Genuine, and 
which Adulterate, I cannot pofitively fay,- becaufe thofe 
Pieces I have are (o rough, that unlefs fome part of the 
Superficies were Artificially polilh'd , the Experiment 
cannot be made : Yet I have reafon to believe it would 
fucceed, were the Stone pohih'd becaufe I find black 
Marhle in general, (b it be of a clo(e Texture and hard, 
-as this is, always partakes of that Property. 
May the i^th. 1694. 
T 0 s T^s c KIT T, 
Since my Writing of this, I find inferred in one of the 
htt Philof.Tranfa^. 199. that isbut juftcome 
to my hands, a fort of an Account of the Giants Cauf 
way, that is fo full of Errors, and grofs Miflakes, that 
nothing in it can be relied on ; as where it fays, The 
Pillars do not confifi ofjoynts, hut are of one entire Piece^ 
where he calls them Cylinders, and a little after, Cylin- 
ders with Angles^ and Czys, fome of them are four-fquared ; 
of which fort of Figures there is not one to be met 
with in the whole Number. But of this enough, which 
I have added only for Truth's fake, that no one may 
be mifguided in this Piece of Natural Hiftory by Mi- 
ftakes, or falfe Reports. 
II. An 
