And the time from one dawn of dan to another shall be called one dan‘ha; and four dan‘ha shall be called one square, because this is the sum of one density, which is twelve thousand of the earth‘s years. And twelve squares shall be called one cube, which is the first dividend of the third space, in which there is no variation in the vortex of the earth. And four cubes shall be called one sum, because its magnitude embraces one equal of the Great Serpent.213