Longhope, as we shall then see, is a sheltered bay nearly four miles long and about one mile in average width, and forms a magnificent natural harbour. Before the days of steam as many as a hundred and fifty vessels might be seen at anchor here, sheltered from the westerly gales which barred their passage through the Pentland Firth. The martello towers on either side of the entrance remind us of a time when storms were not the only danger to our shipping. Protection of a kind more necessary to-day is afforded by the strong revolving light on Cantick Head, and on occasion by the Longhope lifeboat, the heroism of whose hardy crew has often shown itself in deeds of noble daring such as no sea-roving Viking of the ancient days could have surpassed. At the western extremity of Longhope stands the mansion house of Melsetter, with its extensive gardens. On the farther side of the bay is South Walls, a peninsula which is literally “almost an island,” as the waters of Aith Hope almost meet those of Longhope across a narrow “aith” or isthmus. Opposite the entrance to Longhope, whence we start on our return journey to Stromness, we pass the island of Flotta, the “flat island” of the Norsemen, thriving and well cultivated, especially towards the east, where it curves round Pan Hope. To the south of it lies the green island of Switha, to the north-east the tiny Calf of Flotta, and to the north-west, off Mill Bay, the island of Faray. Farther north, and close to the shore of Hoy, lies Risa, or Risa Little, a favourite nesting-place of many of our sea-birds. The last island we notice on our homeward sail is Cava, a couple of miles eastward of which we see the beacon which marks a skerry known as the Barrel of Butter. The eastern group of the South Isles is more closely connected with the East Mainland, being divided from Holm by Holm Sound, where lie the two green islets of Lamb Holm and Glims Holm. Immediately to the south is Burray, the _Borgarey_ of the Norsemen, so called, doubtless, from the two brochs or _borgs_ whose ruins still exist in the north of the island. To the west of Burray lies the peat-covered islet of Hunda. South of Burray, across the narrow channel of Water Sound, lies the large and populous island of South Ronaldsay. At the head of the little bay of the same name stands the neat and thriving village—almost a town—of St. Margaret’s Hope, pleasantly situated among its fertile gardens and fields, and with a substantial pier to accommodate its increasing traffic. Westward from “The Hope” lies Hoxa, a peninsula cut off by Widewall Bay on the south. On the narrow isthmus or “aith” stands a green mound, the “haug,” or howe, from which the name of _Haugseith_ or Hoxa is derived. On the shores of Widewall Bay at low water we may see the submerged peat-moss and decaying remains of large trees which mark a bygone stage in the climate of the islands, and likewise tell of gradual subsidence of the land.