Cedar Rapids, Iowa, Nov. 7, 1896.
To the Editor:
—I have noted in the last two numbers of our Journal references to the dermatitis produced by the Roentgen ray. Will you allow me to report a case which I know was directly referable to the X-ray, as I am the afflicted one myself.Some seven or eight weeks ago I used my wrist in obtaining a successful skiagraph of the wrist joint three or four days in succession. The exposure was from ten to fifteen minutes each time and the ray was produced by Tesla's latent coil.About ten days later I noticed a reddening of the skin which grew deeper until it became a purple. It was accompanied by great pain, excessive tenderness to the touch, considerable swelling and gave a perfect line of demarkation. Finally there was complete desquamation over the surface marked out at the commencement of