In spite of the signs of pregnancy already noted, palpitation and percussion did not show any augmentation in the size of the uterus, but the introduction of a catheter into the bladder showed the existence of a large calculus.

Under chloroform the calculus and its nucleus were disengaged, and proved to be the handle of a tooth-brush, the exact size of which is represented in the accompanying illustration.

The handle was covered with calcareous deposits, and was tightly fixed in the bladder.

At first the young woman would give no explanation for its presence, but afterward explained that she had several times used this instrument for relief in retention of urine, and one day it had fallen into the bladder.

A short time after the operation menstruation returned for the first time in seven months, and was afterward normal.