These units are marked to show that the excesses of the degrees are equal.

1 1, 1 2, 1 3, 1 4, 1 5, 1 6, 1 7, 1 8, 1 9, 1 10, 1 11, 1 12, 1 13, 1 14, 1 15, 1 16

On local motion, which, being natural, is of terminated pyramidal power. The weight that descends by natural motion acquires degrees of velocity at every degree of motion. And always, when it has doubled the motion, it will have doubled the velocity, and so it would continue successively down to the centre of the world. 1 - 2 - 4 - 8 - 16 - 32 - 64 - 128 - 256. In sum, if the thing that falls acquires one degree of velocity at every degree of motion, it diminishes one degree of that time in which the first degree of the said motion was made. The thing that descends, at every degree of motion acquires one degree of velocity and loses one degree of time. The thing that descends, at every degree of motion acquires as much velocity as it diminishes the time in which the first degree was made. That is, that degree which is made in less time is made with more velocity. And naming the descent by degrees, which we shall say are one braccio each, so that, since I so name them, I shall say that the spaces of the little balls are all equal. And although their equality does not diminish, the time in which that movable measures such degrees by its descent does diminish.