Among others reporting instances of protracted pregnancy are Collins, eleven months; Desbrest, eighteen months; Henderson, fifteen months; Jefferies, three hundred and fifty-eight days, and De la Vergne gives the history of a woman who carried an infant in her womb for twenty-nine months; this case may possibly belong under the head of fetus long retained in the uterus. Unconscious Pregnancy.--There are numerous instances of women who have had experience in pregnancy unconsciously going almost to the moment of delivery, yet experiencing none of the usual accompanying symptoms of this condition. Crowell speaks of a woman of good social position who had been married seven years, and who had made extensive preparations for a long journey, when she was seized with a "bilious colic," and, to her dismay and surprise, a child was born before the arrival of the doctor summoned on account of her sudden colic and her inability to retain her water. A peculiar feature of this case was the fact that mental disturbance set in immediately afterward, and the mother became morbid and had to be removed to an asylum, but recovered in a few months. Tanner saw a woman of forty-two who had been suffering with abdominal pains. She had been married three years and had never been pregnant. Her catamenia were very scant, but this was attributed to her change of life. She had conceived, had gone to the full term of gestation, and was in labor ten hours without any suspicion of pregnancy. She was successfully delivered of a girl, which occasioned much rejoicing in the household. Tasker of Kendall's Mills, Me., reports the case of a young married woman calling him for bilious colic. He found the stomach slightly distended and questioned her about the possibility of pregnancy. Both she and her husband informed him that such could not be the case, as her courses had been regular and her waist not enlarged, as she had worn a certain corset all the time. There were no signs of quickening, no change in the breasts, and, in fact, none of the usual signs of pregnancy present. He gave her an opiate, and to her surprise, in about six hours she was the mother of a boy weighing five pounds. Both the mother and child made a good recovery. Duke cites the instance of a woman who supposed that she was not pregnant up to the night of her miscarriage. She had menstruated and was suckling a child sixteen months old. During the night she was attacked with pains resembling those of labor and a fetus slipped into the vagina without any hemorrhage; the placenta came away directly afterward. In this peculiar case the woman was menstruating regularly, suckling a child, and at the same time was unconsciously pregnant.