_
* * * * *
A Postscript.
Annexed some Hours after the Observations were Written.
_So many particulars taken notice of in one Night, may make this Stone
appear a kind of Prodigie, and the rather, because having try'd as I
formerly noted, not only a fine Artificial Crystal, and some also that is
Natural, but a Ruby and two Diamonds, I did not find that any of these
disclos'd the like Glimmering of Light;[43] yet after all, perceiving by
the Hardness, and the Testimony of a Skilfull Goldsmith, that this was
rather a Natural than Artificial Stone; for fear lest there might be some
difference in the way of Setting, or in the shape of the Diamonds I made
use of, neither of which was like this, a flat Table-stone, I thought fit
to make a farther Trial of my own Diamonds, by such a brisk and assiduous
Affriction as might make amends for the Disadvantages above-mention'd, in
case they were the cause of the unsuccessfulness of the former Attempts:
And accordingly I found, that by this way I could easily bring a Diamond I
wore on my Finger to disclose a Light, that was sensible enough, and
continued so though I cover'd it with Spittle, and us'd some other trials
about it.
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