reasons the distance given in Landnáma between the two points seems to me to be a correct statement, but ‘dægra sigling’ must here be interpreted as days of twenty-four hours. Similarly in the case of the voyage from Reykjanes to Jolduhlaup in Ireland. This cannot by any means be brought within the space of five ‘dægra’ of twelve hours each. Approximately the nearest points in Ireland may be taken as about 688 miles distant. Malin Head in the north and Erris Head in the west of Ireland are almost equidistant from Reykjanes, the former being some 685, the latter 690 miles from the starting-point. There is no real reason to suppose that any point in Ireland so near to Iceland is the true position of Jolduhlaup. It is evident on the other hand that a very few more miles will make the distance recorded perfectly consistent with five days of twenty-four hours. If we bring our ship into Sligo Bay the distance will be 718·6 miles, or ten ‘tylfts’ of 71·8. This would be perfectly consistent with the standards of distance already considered, but of course Jolduhlaup may easily have lain even farther away than this from Reykjanes. The name is generally taken to mean ‘wave-run’, and is sometimes spelt Olduhlaup. Joyce[93] attributes a Scandinavian origin to the name of Olderfleet close to Larne Harbour, and as ‘hlaup’ and ‘fljót’ are both common terminations meaning ‘stream’, this word in an Icelandic form (Oldufljót) would be practically identical with Olduhlaup. The author above quoted says that the first part of Olderfleet is a Scandinavian corruption of Ollorbha, the Celtic name of Larne water, but whether the true derivation be from this word or ‘oldu’ a wave is a question which applies equally to Olderfleet and Jolduhlaup and affords no ground of distinction between them. As far as names are concerned the two may well be identical. Larne would be the first important harbour after entering the North Channel between Scotland and Ireland, and may well have been chosen therefore as a well-known point for the measurements in Landnáma. From Reykjanes to Rathlin Island off the entrance of the North Channel is about 713 miles, thence to Larne would be about thirty-seven more, making a distance, if there be anything in this conjecture, of some 750 miles to be covered in the five ‘dægra’—ten ‘tylfts’ of seventy-five miles, which corresponds exactly with our amended table. It has been objected that some of the MSS. do not read ‘five dægra’; this is true, but the alternative (three dægra) does not help those who contend for a twelve hours ‘dægr’, while even if we adopt the arbitrary emendation of the version printed at Skalholt in 1688 and read ‘eight dægra’, the rate of travel, even to the nearest point, would be too rapid to be normal. We have therefore once more a statement remarkably consistent with our data if we interpret a ‘dægr’ as twenty-four hours, and wholly impossible if a ‘dægr’ must universally be considered as only twelve.