They who knew not glasses had not so fair a pretence for the divisibility ad infinitum.
No idea of circle, &c. in abstract.
Metaphysiques as capable of certainty as ethiques, but not so capable to be demonstrated in a geometrical way; because men see clearer & have not so many prejudices in ethiques.
Visible ideas come into the mind very distinct. So do tangible ideas. Hence extension seen & felt. Sounds, tastes, &c. are more blended.
Qu. Why not extension intromitted by the taste in conjunction with the smell—seeing tastes & smells are very distinct ideas?
Blew and yellow particles mixt, while they exhibit an uniform green, their extension is not perceiv'd; but as soon as they exhibit distinct sensations of blew and yellow, then their extension is perceiv'd.
Distinct perception of visible ideas not so perfect as of tangible—tangible ideas being many at once equally vivid. Hence heterogeneous extension.
Object. Why a mist increases not the apparent magnitude of an object, in proportion to the faintness[233]?
Mem. To enquire touching the squaring of the circle, &c.
That wch seems smooth & round to the touch may to sight seem quite otherwise. Hence no necessary connexion betwixt visible ideas and tangible ones.