Page:Philosophical Transactions - Volume 001.djvu/34

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Vertues. 8. By examining their manner of dissolution, or acting upon those bodies dissoluble in them; and the Texture of those bodies before and after the process. 9. By considering, by what and how many means, such and such figures, actions and effects could be produced, and which of them might be the most likely, &c.

He goes on to offer his thoughts about the Pores of bodies, and a kind of Valves in wood; about spontaneous generation arising from the Putrefaction of bodies; about the nature of the Vegetation of mold, mushromes, moss, spunges; to the last of which he scarce finds any Body like it in texture. He adds, from the naturall contrivance, that is found in the leaf of a Nettle, how the stinging pain is created, and thence takes occasion to discourse of the poysoning of Darts. He subjoyns a curious description of the shape, Mechanism and use of the sting of a Bee; and shews the admirable Providence of Nature in the contrivance and fabrick of Feathers for Flying. He delivers those particulars about the Figure, parts and use of the head, feet, and wings of a Fly, that are not common. He observes the various wayes of the generations of Insects, and discourses handsomely of the means, by which they seem to act so prudently. He taketh notice of the Mechanical reason of the Spider's Fabrick, and maketh pretty Observations on the hunting Spider, and other Spiders and their Webs. And what he notes of a Flea, Louse, Mites, and Vinegar-worms, cannot but exceedingly please the curious Reader.

Having dispatched these Matters, the Author offers his Thoughts for the explicating of many Phænomena of the Air, from the Inflexion, or from a Multiplicate Refraction of the rays of Light within the Body of the Atmosphere, and not from a Refraction caused by any terminating superficies of the Air above, nor from any such exactly defin'd superficies within the body of the Atmosphere: which conclusion he grounds upon this, that a medium, whose parts are unequally dense, and mov'd by various motions and transpositions as to one another, will produce all these