( ip8 ) 
common Sand, only this Indian-Saiid is (mailer. Thefe 
little Lumps have neither Tafte nor Smell, and are 
friable, foas to be eafily reduc’d to a very fubtile Pow. 
der. It has fome Parts, which are ftrongly attraded by 
the Loadflone ; and others fo very inactive, as fcarcely 
tofeem to be magnetical: the ftrongeft are the black- 
ed ; but the ina&ive ones are more (hiring, and more 
inclining to the Colour of Lead ; thefe are in the 
greateft Quantity, and from them the others are got 
out by a Loadflone. The Ingenious Moutenus has 
examin’d feveral ways fuch a kind of Sand which is 
brought from Virginia, anddefcrib’d it in the Philof. 
Tranf. N° 197. I have examin’d the Indian-Sand 
another way ; of which, I have given an Account in 
my Phyjical Dijfertations , pag. 117 ; but a great 
deal ftill remain’d to be confidered, and as there is a 
great deal more of this Subftance of the Lazy or 
Inactive, than of the Aftive or Magnetick fort, it 
was proper to try whether a Magnetick Virtue might 
not be excited or increafed in all of it j and after a 
few Trials I found the Thing to fucceed. I fufpe&ed 
that there might perhaps be too great a quantity of 
Sulphur adhering to the Sand, to fuffer it to be turn’d 
into any Metalline Regulus by a long Continuance in 
the Fire j therefore, 1 toafted it in an open Crucible 
for two Hours with half the quantity of Pot-a(h ; 
afterwards I wafhed away the Salt with Water, and 
the Sand remain’d much blacker than before, of which 
I found more than a Quarter endued with a greater 
Magnetick Force. I do not fcruple to attribute this 
Virtue to the Salt; becaufe, tho' the Adion of 
the Fire alone does encreafe the Force of the Sand, 
yef 
