fSi) 
idkved of t^ie Iron-mine in Elva, thati 
kmvpnyhecu'ciic that the Tools of Digger Sj 
and the Idols found there, were furroun- 
ded not with Iron but Earth. 
And thefe particulars I thought not 
an3.ifs to examine fomewhat diligently 
touching the Beds of the Earth, bothhc- 
caufe thofe Seds are Solids naturally in- 
clofcd in Solids,that in them are con¬ 
tained almoft all thofe bodies, which 
gave occafion to the Qiicftion in hand. 
, - , What concerns the Produ- 
ofciryj at. chrjlfal, 1 fliall not 
venture to determine the Mamtr o? h$ 
firft delineation; but this at leaJb is 
without controverfy, that what I have 
met with concerning it in othc rWritecs, 
is infignificant: For neither IrradiatidnS 
( as Ibihe call it ) nor the Figure of the 
Particles like to the Figure of the whole, 
nor the perfedion .of the Bexagond fi¬ 
gure, and the tendency of the parts to 
one and the fame Center, nor fuch like o- 
ther things do anfwer experience} as will 
appear from feveralPropofitions,which 
I fliali lay down,confirmed elfewhere by 
moft evident Experiments. j?ut to avoid 
eonfufion, it will be of ufe, firft to ex* 
