Tis impossible, as I have said, to describe the Infinite Corporeal Figurative Motions: but, amongst those Creatures that are subject to Human Perception, there are some that resemble each other, and yet are of different Natures; as for example, _Black Ebony_, and _Black Marble_, they are both Glassie, smooth, and black; yet, one is Stone, the other Wood. Also, there be many light and shining Bodies, that are of different Natures; as for example, Metal is a bright shining Body; and divers sorts of Stones, are bright shining Bodies: also, clear Water is a bright shining Body; yet, the Metal and Stones are Minerals, and Water is an Element. Indeed, Most Bodies are of a Glassie Hue, or, as I may say, Complexion; as may be observed in most Vegetables; as also, Skins, Feathers, Scales, and the like. But some may say, That _Glassiness is made by the Brightness of the Light that shines upon them_. I answer: If so, then the ordinary Earth would have the like Glassiness: but, we perceive the Earth to appear dull in the clearest Sun-shining Day: wherefore, it is not the Light, but the nature of their own Bodies. Besides, every Body hath not one and the same sort of Glassiness, but some are very different: 'Tis true, some sorts of Bodies do not appear Glassie, or shining, until they be polished: but, as for such sorts of shining Bodies that appear in the dark, there is not many of them perceiv'd by us, besides the Moon and Starrs; but yet some there are, as Fire; but that is an Element. There are also Glow-worms Tayles, Cats Eyes, Rotten Wood, and such like shining-Bodies. CHAP. XII. Of Metamorphoses, or Transformations of Animals and Vegetables. There are some Creatures that cannot be Metamorphosed: as for example, Animals and Vegetables, at least, most of those sorts, by reason they are composed of many several and different Figurative Motions; and I understand _Metamorphose_, to be a change and alteration of the Exterior Form, but not any change or alteration of the Interior or Intellectual Nature: and how can there be a general change of the Exterior Form or Shape of a Human Creature, or such like Animal, when the different Figurative Motions of his different Compositions, are, for the most part, ignorant of each others particular Actions? Besides, as Animals and Vegetables require degrees of time for their Productions, as also, for their Perfections; so, some Time is requir'd for their Alterations: but, a sudden alteration amongst different Figurative Motions, would cause such a Confusion, that it would cause a Dissolution of the _whole_ Creature, especially in actions that are not natural, as being improper to their kind, or sort: The same of Vegetables, which have many different Figurative Motions. This considered, I cannot chuse but wonder, that wise men should believe (as some do) the Change or Transformation of Witches, into many sorts of Creatures. CHAP. XIII. Of the Life and Death of several Creatures.