And yet this Countrey in our Globes is plac'd almost in the midst of the
Torrid Zone (four or five Degrees Southward of the Line.) And our Author
elsewhere tells us of the Inhabitants, that they are so fond of their
Blackness, that they will not suffer any that is not of that Colour (as the
_Portugalls_ that come to Trade thither) to be so much as Buri'd in their
Land, of which he annexes a particular example,[14] that may be seen in his
Voyage preserv'd by our Industrious Countreyman Mr. _Purchas_. But it is
high time for me to dismiss Observations, and go on with Experiments.
[11] _Piso_ Nat. & Med. Hist. _Brasil. lib_ 1. in fine.
[12] _Purchas_ Pilgrim. Second part, Seventh Book 3. Chap. Sect 5.
[13] _Purchas_. Ibid.
[14] _Purchas_ Ibid. in fin
_EXPERIMENT XII._
The way, _Pyrophilus,_ of producing Whiteness by Chymical Praecipitations is
very well worth our observing, for thereby Bodyes of very Differing Colours
as well as Natures, though dissolv'd in Several Liquors, are all brought
into _Calces_ or Powders that are White. Thus we find that not only
Crabs-eyes, that are of themselves White, and Pearls that are almost so,
but _Coral_ and _Minium_ that are Red, being dissolv'd in Spirit of
Vinegar, may be uniformly Praecipitated by Oyl of _Tartar_ into White
Powders.
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