Columbus, Ohio, Sept. 9, 1907.
To the Editor:
—One of the greatest advances in the treatment of purulent peritonitis we owe to Dr. Fowler, who first suggested putting the patient in a semi-recumbent position after operation in order to secure better drainage, and to keep the pus as much as possible from the upper portion of the abdomen where absorption is rapid. His suggestion was to elevate the head of the bed. I used this method in a number of cases, but found it rather difficult to keep the patient from sliding down toward the foot. A number of devices were resorted to to prevent this, but none of them were entirely satisfactory. I then tried to get up some sort of a mechanical device which could be placed on the bed and which would answer the purpose better. It finally struck me that a rocking chair would furnish just