the feudal system, seems to afford a simple and natural explanation of the difficulty by which genealogists have been so much puzzled. "This custom was termed _hand-fasting_, and consisted in a species of contract between two chiefs, by which it was agreed that the heir of one should live with the daughter of the other as her husband for twelve months and a day. If, in that time, the lady became a mother, or proved to be with child the marriage became good in law, even although no priest had performed the marriage ceremony in due form; but should there not have occurred any appearance of issue, the contract was considered at an end, and each party was at liberty to marry or hand-fast with any other. It is manifest that the practice of so peculiar a species of marriage must have been in terms of original law among the Highlanders, otherwise it would be difficult to conceive how such a custom could have originated, and it is in fact one which seems naturally to have arisen from the form of their society, which rendered it a matter of such vital importance to secure the lineal succession of their chiefs. It is perhaps not improbable that it was this peculiar custom which gave rise to the report handed down by the Roman and other historians, that the ancient inhabitants of Great Britain had their wives in common, or that it was the foundation of that law of Scotland by which natural children became legitimatized by subsequent marriage.[3] And as this custom remained in the Highlands until a very late period, the sanction of ancient custom was sufficient to induce them to persist in regarding the offspring of such marriages as legitimate."[4]