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

branes line the posterior surface of the iris, or obstruct its central portion. Thus far, he only deems this procedure appli- cable to those who have already undergone the operation for cataract; as, in case the lens being present, its opacity would be induced during the application of the cautery. He prefers for this purpose the compound Bunsen's battery. Having made an incision at the external circumference of the cornea, he passes in the cauterizing needle, directing its platinum ring to the point he wishes to influence, taking care not to cauterize the edges of the external wound, nor the posterior surface of the cornea; and, when fairly adjusted, contact is made, and retained, and broken, as he judges best at the moment. Nervous Affections of the Ear. According to Dr. Toynber, of St. James's Dispensary, the most prevalent local cause of deafness in the ear is a chronic low inflammation of the mucous membrane which lines the tympanitic cavity ; and he thinks by far the greater majority of cases commonly called " nervous deafness" ought more prop- erly to be attributed to this cause. We should be reminded of the three stages of this condition (while contemplating aid by galvanism) as being, — First. Where the membrane retains its natural delicacy of structure, though its blood vessels are considerably enlarged, blood is seen effused into its substance, or perhaps more fre- quently at its attached surface. Second. Where the pathological condition shows the mem- brane to be very thick, and often flocculent. In this state, the tympanic plexus of nerves becomes involved and concealed; the base and crura of the stapes are frequently completely em- bedded in it, while the fenestra rotunda appears only like a little depression in the swollen membrane. Third. Where by far the most frequent and peculiar char- acteristic of this second stage of the disease, is the formation of membranous bands betioeen various parts of the tympanic cavity. These bands are at times so numerous as to occupy