And though I
admir'd to see, that I know not how many Men otherwise Learn'd, should
confidently ascribe to Jewels such Virtues as seem no way competible to
Inanimate Agents, if to any Corporeal ones at all, yet as to what is
affirm'd concerning the Turquois's changing Colour, I know not well how to
reject the Affirmation of so Learned (and which in this case is much more
considerable) so Judicious a Lapidary as _Boetius de Boot_[31], who upon
his own particular and repeated Experience delivers so memorable a
Narrative of the Turquois's changing Colour, that I cannot but think it
worth your Perusal, especially since a much later and very Experienc'd
Author, _Olaus Wormius_,[32] where he treats of that Stone, Confirms it
with this Testimony. _Imprimis memorandum exemplum quod Anshelmus Boetius
de seipso refert, tam mutati Coloris, quam a casu preservationis. Cui &
ipse haud dissimile adferre possum, nisi ex Anshelmo petitum quis putaret._
I remember that I saw two or three years since a _Turcois_ (worn in a Ring)
wherein there were some small spots, which the _Virtuoso_ whose it was
asur'd me he had observ'd to grow sometimes greater sometimes less, and to
be sometimes in one part of the Stone, sometimes in another.
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