Records of Radiographic Work.

Omaha, Nov. 9, 1908. To the Editor: —I wish to call the attention of physicians engaged in radiography to a system of correct recording. There has been too much guesswork in the various procedures that are thought necessary. Many have argued that each exposure must be studied separately and that there were so many things to be taken into consideration that no attention should be given to any previous similar case. When I began this work I followed this method and usually spoiled two or three plates before getting one that was satisfactory. While I did my work in this way it never appealed to me as being anything but a slipshod, careless method and one not in accord with my sense of order and precision. I now keep a careful record of each plate taken and find the following to be true, viz.: Given a patient weighing 150 pounds,