204. INJURIES BY ACCIDENT AND MISCELLANEOUS CASES. _The Integral_, Cleveland, Ohio, ’96.—Many fingers and hands were examined by Prof. Miller that had been injured by planing machines, cog-wheels, base balls, pistols, etc., and in each case the nature of the injuries was determined. Several cases of fractured arms were studied—some through splints and bandages. Some sciagraphs indicated that the ends of the broken bones had not been placed in apposition. Subsequently, an operation was performed to remedy the setting. In one case, he sciagraphed the arm from which a piece of the ulna had been removed five years previously. The necrosis had increased. Two sciagraphs at right angles to each other clearly exhibited the nature of the disease. The permanent set of the toes by wearing pointed shoes was clearly exhibited (p. 30.) The figure on page 147 is the side view of a foot in a laced shoe. The outlines of the bones can be traced, also the eyelets and the pegs in the heel, while the uppers scarcely appear. In Fig. 1 (introduction) is shown a head, only the skull being clearly reproduced. In the negative, the teeth appear and places whence the teeth have been extracted, also the jaw bones, nasal cavities and the ragged junction of the bones and cartilage. The varying thickness is represented in the cut, at the temples and ears. Fig. 2 (introduction) shows that a broken bone was badly set, the ends overlapping each other instead of meeting end to end. A sciagraph of an elbow is shown on p. 161. The flesh is scarcely visible. Fig. 3 (introduction) is a picture which reproduced the mere indication of the spine and ribs. In the original negative the collar bones, pelvis, clavicles, buckle of clothing and location of the heart and stomach were faintly outlined. Fig. 4 (introduction) is a representation of the knee of a boy 15 years old, in knickerbockers, showing the buttons clearly, and dimly a 32 caliber bullet which is imbedded in the end of the femur. 204_a_. NECROSIS. Mortification of the ulna is represented on p. 142. Necrosis of the bone corresponds to gangrene of the soft parts; life is extinct. 205. MORTON’S EXPERIMENT. DIAGNOSIS. _Elect. Eng._, N.Y., June 17, ’96. Lect. before _Odontological So._, N.Y., Apr. 24, ’96; repeated in _Dental Cosmos_, June, ’96.—Dr. William J. Morton, of New York, made several important examinations of the human system by the use of X-rays.