C. THE TENDONS.The terminal portions of the extensor pedis and the flexor perforans.

Flight follows by muscle prepared for flight, for the disturbance of the inter-muscular equilibrium tenses the flexor muscles, the muscles of flight, and relaxes the extensor muscles, the muscles of attack.

On the outer side of the wrist we can distinctly see and feel when in action, the three extensor tendons of the thumbs.

He will always succeed on the volar side of the hand, but occasionally fail on the dorsal surface of the hand, the extensor surface of the arm, and very frequently on the skin of the back. Experiment 207.