(i)

The PREFACE.

T H E Author os this hath written ThreeTrads concerning the Sub j ed of the Mag-nets or Magnetism ; whereof this is thelas. The Firs is of the Magnet it self whichhe calls Magnetismus Magneticus ; the next isconcerning other Magnetisms observable in other Na-tural Bodies, which he calls Magnetismus Physicus:and the last is this, which he calls MagnetismusMagnus, for what Reason it is plain in the Book.He had received very early a special Touch of the Di-vine Magnet $ and from his Touth, had not onlystudied the Holy Scriptures, hut had^noreovtr veryindustriously studied the Great Book of Nature, in allits Barticles $ and bestdes that, that large Volume ofProvidence, in the History and Chronology of the A-Elions and Occurrences of Mankind upon Earth fromthe beginning ; and all this for the very fame end,for which this little Trad was written. He is wellknown to have been a most industrious Man in hisown Profestion of the Law, and to have made him -self a compleat Master of it j and yet notwithstand-ing I am very well satisfied, that the Industry andTime, which he imployed in , these Studies, was no-thing less, if not much more, as J verily believe,than what he imployed in that laborious Study anaPradice. Hardly a Day pasted over his Head,in the Times of most pressing Business in his Profes-sion,even the Term and the Circuits, wherein be did

A 2 not

4