64 134 Section, from side to side, through the Wrist, showing the shapes of the bones and the mode in which they are adapted to one another. A, the _radius_; B, the _ulna_; C, _scaphoid_ bone; D, _cuneiform_ bone; E, _semi-lunar_ bone; F, line of contact of radius and ulna; G, G, side _ligaments_ connecting the wrist-bones with the bones of the forearm. H, I, K, L, M, _metacarpal_ bones of thumb and fingers. 65 138 View of the superficial muscles on the palmar aspect of the forearm and hand. A, the _radial flexor_ of the wrist. B, the _long palmar_ muscle. C, the _ulnar flexor_ of the wrist. D, the muscles of the “ball of the thumb.” E, the _long supinator_ muscle. F, the _long pronator_. G, the lower part of the _biceps_ muscle. H, Cross _ligaments_ binding the tendons in their places. (This and the two following figures are from Quain’s _Anatomy_.) 66 138 View of the deep muscles and tendons on the palmar aspects of the forearm and hand. A, the _long flexor_ of the thumb. B, some of the _flexors_ of the fingers. C, the _Adductor_ muscle of the thumb. 67 139 The _extensor_ muscles and tendons of the wrist, thumb, and fingers seen on the back of the forearm and hand. A, A, A, the _abductors_ and _adductors_ of the fingers. B, B, the cross _ligament_ which binds the tendons in their places. 68 146 Hand holding a cricket-ball, showing that the tips of the fingers and the thumb all reach the same level. 69 152 Diagram showing the distribution of the _median_ (A) and _ulnar_ (B) _nerves_ in the hand.