There is mentioned a bifid funis. The Ephemerides and van der Wiel speak of a duplex funis. Nolde reports a cord 38 inches long; and Werner cites the instance of a funis 51 inches long. There are modern instances in which the funis has been bifid or duplex, and there is also a case reported in which there were two cords in a twin pregnancy, each of them measuring five feet in length. The Lancet gives the account of a most peculiar pregnancy consisting of a placenta alone, the fetus wanting. What this "placenta" was will always be a matter of conjecture. Occasionally death of the fetus is caused by the formation of knots in the cord, shutting off the fetal circulation; Gery, Grieve, Mastin, Passot, Piogey, Woets, and others report instances of this nature. Newman reports a curious case of twins, in which the cord of one child was encircled by a knot on the cord of the other. Among others, Latimer and Motte report instances of the accidental tying of the bowel with the funis, causing an artificial anus. The diverse causes of abortion are too numerous to attempt giving them all, but some are so curious and anomalous that they deserve mention. Epidemics of abortion are spoken of by Fickius, Fischer, and the Ephemerides. Exposure to cold is spoken of as a cause, and the same is alluded to by the Ephemerides; while another case is given as due to exposure white nude. There are several cases among the older writers in which odors are said to have produced abortion, but as analogues are not to be found in modern literature, unless the odor is very poisonous or pungent, we can give them but little credence. The Ephemerides gives the odor of urine as provocative of abortion; Sulzberger, Meyer, and Albertus all mention odors; and Vesti gives as a plausible cause the odor of carbonic vapor. The Ephemerides mentions singultus as a cause of abortion. Mauriceau, Pelargus, and Valentini mention coughing. Hippocrates mentions the case of a woman who induced abortion by calling excessively loud to some one. Fabrieius Hildanus speaks of abortion following a kick in the region of the coccyx. Gullmannus speaks of an abortion which he attributes to the woman's constant neglect to answer the calls of nature, the rectum being at all times in a state of irritation from her negligence. Hawley mentions abortion at the fourth or fifth month due to the absorption of spirits of turpentine. Solingen speaks of abortion produced by sneezing. Osiander cites an instance in which a woman suddenly arose, and in doing so jolted herself so severely that she produced abortion. Hippocrates speaks of extreme hunger as a cause of abortion. Treuner speaks of great anger and wrath in a woman disturbing her to the extent of producing abortion. The causes that are observed every day, such tight lacing, excessive venery, fright, and emotions, are too well known to be discussed here.