Page:Experimentsnotes00boyl.pdf/566

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12
Of the Mechanical Origine

on) emit ſtreams. And in pieces of Sulphur conveniently ſhaped, I found upon due Attrition a Sulphureous ſtink. And that piece of Amber which I moſt employ, being ſomewhat large and very well poliſh'd, will, being rub'd upon a piece of woollen cloth, emit ſteams, which the noſtrils themſelves may perceive; and they ſometimes ſeem to me not unlike thoſe that I took notice of, when I kept in my mouth a drop or two of the diluted Tincture (or Solution of the finer parts) of Amber made with Spirit of Wine, or of Sal Armoniac.

7. It agrees very well with what has been ſaid of the corporeal Emanations of Amber, that its attractive power will continue ſome time after it has been once excited. For the Attrition having caus'd an inteſtine commotion in the parts of the Concrete, the heat or warmth that is thereby excited ought not to ceaſe, as ſoon as ever the rubbing is over, but to continue capable of emitting

Effluvia