that state, and to concur to the production of divers Changes in the bodies that hit against it, by either quite stopping or lessning their Motion (whilst the body formerly at Rest Receives all or part of it into it self) or else by giving a new Byass, or some other Modification, to Motion, that is, To the Grand and Primary instrument whereby Nature produces all the Changes and other Qualities that are to be met with in the World.
I should likewise, after all this, explain to you how, although Matter, Motion and Rest, seem’d to me to be the Catholick Principles of the Universe, I thought the Principles of Particular bodies might be Commodiously enough reduc’d to two, namely Matter, and (what Comprehends the two other, and their effects) the result or Aggregate of those Accidents, which are the Motion or Rest, (for in some Bodies both are not to be found) the Bigness, Figure, Texture) and the thence resulting Qualities of the small parts) which are necessary to intitle the Body whereto they belong to this or that Peculiar Denomination; and discriminating it from others to appropriate it to a Determinate Kind of Things, as Yellowness, Fixtness, such a Degree of Weight, and of Ductility, do make the Portion of matter wherein they Concur, to be reckon’d among perfect metals, and obtain the name of Gold.) Which Aggregate or result of Accidents you may, if You please, call either Structure or Texture.