Extension thought peculiarly inert, because not accompany’d wth pleasure & pain: hence thought to exist in matter; as also for that it was conceiv’d common to 2 senses, [as also the constant perception of ’em]. Blind at 1st sight could not tell how near what he saw was to him, nor even whether it be wthout him or in his eye(205). Qu. Would he not think the later? Blind at 1st sight could not know yt wt he saw was extended, until he had seen and touched some one self-same thing—not knowing how _minimum tangibile_ would look in vision. (M345) Mem. That homogeneous particles be brought in to answer the objection of God’s creating sun, plants, &c. before animals. In every bodie two infinite series of extension—the one of tangible, the other of visible. All things to a blind [man] at first seen in a point. Ignorance of glasses made men think extension to be in bodies. (M346) Homogeneous portions of matter—useful to contemplate them. Extension if in matter changes its relation wth _minimum visibile_, wch seems to be fixt. Qu. whether m.v. be fix’d? (M347) Each particle of matter if extended must be infinitely extended, or have an infinite series of extension. (M348) If the world be granted to consist of Matter, ’tis the mind gives it beauty and proportion. Wt I have said onely proves there is no proportion at all times and in all men between a visible & tangible inch. Tangible and visible extension heterogeneous, because they have no common measure; also because their simplest constituent parts or elements are specifically different, viz. _punctum visibile & tangibile_. N. B. The former seems to be no good reason. (M349) By immateriality is solv’d the cohesion of bodies, or rather the dispute ceases. Our idea we call extension neither way capable of infinity, i.e. neither infinitely small or great. Greatest possible extension seen under an angle wch will be less than 180 degrees, the legs of wch angle proceed from the ends of the extension. (M350) Allowing there be extended, solid, &c. substances without the mind, ’tis impossible the mind should know or perceive them; the mind, even according to the materialists, perceiving onely the impressions made upon its brain, or rather the ideas attending these impressions(206). Unity _in abstracto_ not at all divisible, it being as it were a point, or with Barrow nothing at all; _in concreto_ not divisible _ad infinitum_, there being no one idea demonstrable _ad infinitum_. (M351) Any subject can have of each sort of primary qualities but one particular at once. Locke, b. 4. c. 3. s. 15. Qu. whether we have clear ideas of large numbers themselves, or onely of their relations? (M352) Of solidity see L. b. 2. c. 4. s. 1, 5, 6. If any one ask wt solidity is, let him put a flint between his hands and he will know. Extension of body is continuity of solid, &c.; extension of space is continuity of unsolid, &c.