Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.

digital nerve ever holds any communication with its fellow on the opposite side of the finger; hence each gives an independent impression ; in effect, this arrangement is, as it were, " a jury of ten" which certainly ought to give far more uniform and reliable judgment, than if every each were influenced by his fellow. The ulnar nerve arises also from the brachial plexus, and passes along down the upper arm a very little back of the median nerve, but diverging from it more and more until it reaches the groove between the internal condyle and the ole- cranon, and crossing upon the internal head of the triceps extensor. Exactly at the under and back part of the elbow, this nerve is quite superficial, lying sup- ported by the inner condyle of the elbow joint, against which it is easily compressed, as is often done by accident, giving rise to the thrilling sensation along the inner side' of the forearm and little finger, \isually ascribed to hitting the " funny bone." From this point the ulnar nerve passes between the two heads of the flesok carpi ulnaris, and descends along the in- ner side of the forearm ; crossing the an- nular ligament at the wrist, it divides into two branches — the superficial one going to the fingers by three terminal branches ; the one of which is distributed to the ul- nar side of the little finger; one goes to the neighboring borders of the little and ring fingers, and a filament to join the palmar median. The deep palmar branch passes between the abductor and flexor ™e- 75. a view of the r 1 Nerves in the Back of the Fore- minimi digiti, to the deep palmar arch, a™, and Hand. 1, 1. The Ulnar Nerve. 2,2. The Ramus Profundus Dorsalis Nerve. 3. Termination of the Nervus Cuta- neus Humeri. 4. The Dorsalis Carpi — a Branch of the Radial Nerve. 5,5. Digital Nerves — a back view of them. 6. Dorsal Branch of the Ulnar Nerve.