The equilateral 'elmain', which has its lesser diameter equal to its side.

Cold water - Hot water
Water has motion only through its gravity and levity, and these are its accidents, because in itself it has neither gravity nor levity; but it acquires gravity when it lies above, or at the lateral boundaries of, air or another liquid lighter than itself, and it acquires levity when, in vaporizing, it grows thinner through heat, and then it stands above the cold water.

n - S - b - a - m f

The arid and the dry is almost of the nature of a vacuum, and it draws moisture to itself with as much weight as is its power. In this raising of moisture there is generated as much weight of that moisture as is the power of the attraction of the dry; and thus, the two powers being made equal, they are ended, because, neither one surpassing the other, the moisture remains between the air and the power of the dry, which resists the descent of that moisture. And the experiment is in the margin, where a band of old dry linen cloth, which is n m f, is placed with its lower front at f, beneath the water of the vessel at f, and this band of cloth draws to itself as much water as is the power of its attraction, that is from a to b; and when it can draw that water no further, it always maintains it in its place, and however much diminishes as it seeks to dry, just so much of the other water climbs back up, so long as the cloth and the water endure. And this is necessary, for if the weight of the water diminished, the power of the dry would grow and of necessity draw up as much water as the power had gained in force. Therefore it is concluded that the water will never diminish its height, because that would diminish the weight, and the power of attraction will never fail so long as the material attractive of that moisture does not fail, etc.
It follows that when the water loses the levity it has in its rising, it goes on losing its power by degrees, and the dry has lost the power of its attraction, which is lost by the same degrees by which is lost the levity of the water drawn by that dry cloth.
It is true that when the height of the water in its vessel fails, so fails likewise the height of the wetted portion in the cloth.
But if the cloth be wetted from a to n and to S and then submerged as before, that is from a to f, then the water n S will descend somewhat lower without drawing after it any part of the water a n. For this reason the drawing-out of the water n S will make it thinner and lighter, and the more it descends the lighter it becomes and consumes the power of descending in consuming its own heaviness. This descent of water arises from two causes: the first, that the weight of the water descends of itself; the second, that the dryness of that dry cloth draws it to itself. But if, for the adversary's sake, the extension of the water n S descended lower than the skin of the water, it would then have continuous motion until the consuming of the water in the vessel. This is false, because such extended water is thinner than the water a n and less heavy; whence it cannot descend, but part of it vaporizes and part returns backward, as will be proved.