...aspects when they bend, and the more they bend the more they thicken, and likewise they diminish the more the fingers are straightened; and the same happens in the toes of the feet, and they will vary the more the more fleshy they are.

[268] Of the joints of the shoulders, and their increases and diminutions. The joints of the shoulders and of the other bendable members will be told in their place in the treatise on anatomy, where the causes of the motions of all the parts of which man is composed are shown.

[269] b. Of the shoulders. Book A, sheet 26. Three are the simple principal motions of the bending made by the joint of the shoulder, that is, when the arm attached to it moves up or down, or forward or backward, although one might say that such motions are infinite; because if one turns the shoulder to a wall face and marks with the arm a circular figure, one will have made all the motions that are in that shoulder; and because every continuous quantity is divisible to infinity, and such a circle is a continuous quantity made by the motion of the arm—which motion does not produce a continuous quantity unless it continuously conducts it—therefore the motion of that arm has passed through all the parts of the circle; and that circle being divisible to infinity, infinite have been the varieties of the shoulder.

[270] Of the universal measures of bodies. Book A, sheet 36. I say that the universal measures ought to be observed in the lengths of the figures, and not in the thicknesses, because among the praiseworthy and marvellous things that appear in the works of nature is that no work of hers, in whatever species by itself, resembles another in any single particular with precision. Therefore you, imi-