24. Of Salt, and of Sea- or Salt-water.
THe reason, why Salt is made, or extracted out of Salt-water, is, that the Circular lines of Sea- or Salt-water, are pointed exteriously, but not interiously, which is the cause that the saltish parts may be easily di∣vided from those watry lines; and it is to be observed, that those points when joyned to the watry circles, are rare, but being once separated, either by Art, or a more natural way, by some sorts of dividing motions, they become more dense; yet not so dense, but they may melt or return again into the first figure, which is a rare figure, and so become liquid salt, and after∣wards they may be densed or contracted again; for there is no other difference between dry and liquid salt, but what is made by the rarity or density of those sorts of points. As for that sort of Salt, which is named vo∣latile, it is when some of those rare points become more dilated or rarified, then when they are joyned to the watry circle-lines; I say some, not all; for as some points do condense or contract into fixt salt, so others do dilate or arise into volatile salt. But perchance some will say, How can there be several sorts of points, since a point is but a point? I answer; There may very well be several sorts, considering the Nature of