The question of retardation of labor, like that of premature birth, is open to much discussion, and authorities differ as to the limit of protraction with viability. Aulus Gellius says that, after a long conversation with the physicians and wise men, the Emperor Adrian decided in a case before him, that of a woman of chaste manners and irreproachable character, the child born eleven months after her husband's death was legitimate. Under the Roman law the Decenviri established that a woman may bear a viable child at the tenth month of pregnancy. Paulus Zacchias, physician to Pope Innocent X, declared that birth may be retarded to the tenth month, and sometimes to a longer period. A case was decided in the Supreme Court of Friesland, a province in the northern part of the Netherlands, October, 1634, in which a child born three hundred and thirty-three days after the death of the husband was pronounced legitimate. The Parliament of Paris was gallant enough to come to the rescue of a widow and save her reputation by declaring that a child born after a fourteen months' gestation was legitimate. Bartholinus speaks of an unmarried woman of Leipzig who was delivered after a pregnancy of sixteen months. The civil code of France provides that three hundred days shall constitute the longest period of the legitimacy of an infant; the Scottish law, three hundred days; and the Prussian law, three hundred and one days. There are numerous cases recorded by the older writers. Amman has one of twelve months' duration; Enguin, one of twelve months'; Buchner, a case of twelve months'; Benedictus, one of fourteen months'; de Blegny, one of nineteen months'; Marteau, Osiander, and others of forty-two and forty-four weeks'; and Stark's Archives, one of forty-five weeks', living, and also another case of forty-four weeks'. An incredible case is recorded of an infant which lived after a three years' gestation. Instances of twelve months' duration are also recorded. Jonston quotes Paschal in relating an instance of birth after pregnancy of twenty-three months; Aventium, one after two years; and Mercurialis, a birth after a four years' gestation--which is, of course, beyond belief. Thormeau writes from Tours, 1580, of a case of gestation prolonged to the twenty-third month, and Santorini, at Venice, in 1721, describes a similar case, the child reaching adult life. Elvert records a case of late pregnancy, and Henschel one of forty-six weeks, but the fetus was dead. Schneider cites an instance of three hundred and eight days' duration. Campbell says that Simpson had cases of three hundred and nineteen, three hundred and thirty-two, and three hundred and thirty-six days'; Meigs had one of four hundred and twenty. James Reid, in a table of 500 mature births, gives 14 as being from three hundred and two to three hundred and fifteen days'.