The subject of this operations labored under a large false aneurism, forming a tumor on the lower and right side of the abdomen and upper part of the thigh. The incisions were made pretty similar to those in Dr. Murray's case. The operation was performed at Rio Janeiro in 1842. The aorta was secured within the ligature after a good deal of difficulty in the operation: the patient died at the expiration of the tenth day after, from hemorrhage, which took place from a small opening in the vessel close to the ligature. On examination after death it was found that the ligature had been applied about four lines above the bifurcation of the aorta, and that the precise nature of the original disease was an aneurism of the femoral artery in which the coats of the vessel had given way.