Some time ago A. Bauer made a theoretical suggestion for the prevention of bleeding in operations for tubal pregnancy and of placenta prsevia. He proposed to tie off the extremities with rubber bandages, so as to stop the venous reflux, while the arteries would still keep on pumping blood into the limbs. While he did not expect much in the line of depleting the organs of the trunk, he put great hopes in the autotransfusion following the release of the constriction of the limbs. He suggests this "operating by blue extremities" in all eases in which considerable hemorrhage during the operation could be expected.
We put this theoretical suggestion to practical use in bladder operations, and the results were highly satisfactory. Fifteen minutes before the operation the four limbs were tied up with gauze roller-bandages close to the armpits and to the inguinal regions respectively. These bandages were put