Ottawa, Ill., June 24, 1907.
To the Editor:
—The article of Dr. Farr in The Journal, June 22, prompts me to mention a simple filing device which I have found useful. For years I have kept important case records on slips of paper, thick enough to be easily fingered over when filed, as in a card catalogue. At first I used cards, but found it no easier to manipulate them, and they add very materially to the bulk. With the multiplication of the records, however, it became a little troublesome to look up a case during a busy office hour. In order to lessen the number of record units to be gone over I have, for the past few months, adopted the method of placing each patient's, or in some cases each family's, history slips in a half envelope—that is an envelope sealed and cut midway between the ends. I