The frog instantly dies when the spinal cord is pierced; and previous to this it lived without head without heart or any bowels or intestines orskin; and here therefore it would seem lies the foundation of move- ment and life.

The human foot is a masterpiece of engineering and a work of art.

The painter who is familiar with the nature of the sinews, muscles, and tendons, will know very well, in giving movement to a limb, how many and which sinews cause it; and which muscle, by swelling, causes the contraction of that sinew; and which sinews, expanded into the thinnest cartilage, surround and support the said muscle.

To compare the bone structure of the horse with that of the man you should show the man on tiptoe in representing the legs.

Then you shall make a discourse on the hands of each animal in order to show how they vary, as in the bear in which the ligaments ofthe tendons of the toes of the foot are connected over the neck of the foot.

That cause which moves the water through its springs against the natural course of its gravity is like that which moves the humours in all the shapes of animated bodies.