THE BRiTISH MPJJ)ICAL JOURNAL 619~~~~~ is arrested, it must be withdrawn two or three inches, rotated between the thumb and finger, and agan twisted down upon the obstrmction. During the repetition of these manipulations it often readily slips into the bladder; *t the same time, its free and easy movement in the urethra, together with the sensations experienced by the patient, cdearly indicate to the surgeon that the stricture has been overcome, and the catheter coaxed to move on in the right direction. The dis-