The earliest purely medical Sanskrit texts are the Ayur Vedas of Châraka and Sûsruta, which were probably written about 600 B.C., but which are undoubtedly compilations of information which had been handed down during many centuries before that time. In each of these is a section devoted to poisons and their antidotes (Kalpa), in which it is written that a knowledge of poisons and antidotes is necessary to the physician “because the enemies of the Rajah, bad women, and ungrateful servants sometimes mix poison with the food.” Full directions are also given for the recognition of a person who gives poison, and to differentiate the poisons themselves, whose number, from all the kingdoms of nature, is legion. The age at which women may marry is fixed at twelve years, while men may not marry before twenty-five. The duration of pregnancy is given as between nine and twelve lunar months, the average being ten. The practice of medicine is restricted to certain castes, and requires the sanction of the Rajah, and the method of education of medical students is prescribed.[6] It is singular that the Greeks were apparently destitute of any knowledge of legal medicine. Although medicine and jurisprudence were highly developed among them, allusions to any connection between the two are of very rare occurrence and uncertain. The Hippocratic writings (_ca._ 420 B.C.) contain many facts which are of medico-legal interest: the possibility of superfœtation was recognized;[7] the average duration of pregnancy was known, and the viability of children born before term was discussed,[8] the relative fatality of wounds affecting different parts of the body was considered,[9] and the Hippocratic oath makes the physician swear that he “will not administer or advise the use of poison, nor contribute to an abortion.” The position of the physician in Greek communities was an exalted one. No slave or woman might be taught medicine,[10] although later free-born women were permitted to practise in their native places. Homer also refers to physicians as men of learning and of distinction.[11] The Greek physician was therefore in a position, both from his information and from his standing in the community, to aid in the administration of justice. The Greeks were also extremely litigious and possessed a code of criminal procedure which was elaborate, and in many respects resembled those now in use in England and the United States.[12] The writings of the Greek orators, Demosthenes, Æschines, Lysias, Antiphon, Isocrates, etc., which have come down to us substantiate the claim of Ælian that “to Athens mankind is indebted for the olive, the fig, and the administration of justice.”[13]