Physiologia Epicuro-Gassendo-Charltoniana, or, A fabrick of science natural, upon the hypothesis of atoms founded by Epicurus repaired [by] Petrus Gassendus ; augmented [by] Walter Charleton ...

SECT. I.

ARTIC.

1 THe Nature and Obscurity of the Subject, hinted by certain Metaphorical Cogno∣mina, agreeable thereunto, though in divers re∣lations.

ibid.

2 Why the Author insisteth not upon the (1) se∣veral Appellations, (2) Inventor of the Loadstone, (3) invention of the Pixis Nautica.

384

3 The Virtues of the Loadstone, in General, Two, the Attractive, and Directive.

ibid.

4 Epicurus his first Theory of the Cause and Manner of the Attraction of Iron by a Load∣stone; according to the Exposition of Lucre••i∣us.

ibid▪

5 His other solution of the same, according to the Commentary of Galen.

386

6 Galens three Grand Objections against the same, briefly Answered.

387

7 The insatisfaction of the Ancients Theory ne∣cessitates the Author to recur to the Specula∣tions and Observations of the Moderns, con∣cerning the Attraction of Iron by a Magnet; and the Reduction of them all to a few Capi∣tal observables. viz.

388

8 A Parallelism betwixt the Magnetique Facul∣ty of the Loadstone and Iron; and that of Sense in Animals.

389

9 That the Loadstone and Iron interchangeably operate each upon other, by the mediation of cer∣tain Corporeal Species, transmitted in ••ays: and the Analogy of the Magnetick, and Lumi∣nous Rayes.

390

10 That every Loadstone, in respect of the Cir∣cumradiation of its Magnetical Aporrhae's ought to be allowed the supposition of a Centre Axis, and Diametre of an Aequator: and the Advantages thence accrewing.

391

11 The Reason of that admirable Bi-form, or Janus-like Faculty of Magneticks: and why the Poles of a Loadstone are incapable, but those of a Needle easily capable of transplantation from one Extreme to the contrary.

392

12 An Objection, of the Aversion or Repulsi∣on of the North Pole of one Loadstone, or Needle, by the North Pole of Another: prae∣vented.

393

13 Three principal Magnetick Axioms, deduced from the same Fountain.

ibid.

14 A DIGRESSION to the Iron Tomb of Mahomet.

394

15 That the Magnetique Vigour, or Perfection both of Loadstones and Iron, doth consist in ei∣ther

their Native Purity and Vniformity of Substance, or their Artificial Politeness.

396

16 That the Arming of a Magnet with polished Steel, doth highly Corroborate; but as much diminish the sphere of its Attractive Virtue.

ibid.

17 Why a smaller or weaker Loadstone, doth snatch away a Needle from a Greater, or more Potent one; while the small or weak one is held within the sphere of the great or stronger ones Activity: and not otherwise.

397

18 COROLLARY. Of the Abduction of Iron from the Earth by a Loadstone.

398