Soon after the discovery at Lagore, another lake-dwelling was discovered in lowering the waters of Roughan Lake, near Dungannon. Here were found many fragments of pottery and bones, some bronze spear-heads, and a fine sandstone quern, having an old Irish cross carved in high relief. To this ‘fortified island’ Sir Phelim O’Neill retired after the surrender of Charlemont, and held out until boats arrived, when he was captured in 1653. About the time of these discoveries, another ‘island’ was laid bare in Lough Gur by similar draining operations; and a large number of objects of antiquarian interest, and quantities of bones, were discovered. This is considered to be one of the earliest lake-dwellings in Ireland; and the district, as we have already intimated, is exceptionally interesting from an archæological point of view. There appears to have been no staking or surrounding timber enclosure in connection with this crannog. Other discoveries quickly followed; three stockaded lake-dwellings were found in Monaghan (1843–4). One in Ballinderry Lake, near Moate, yielded a large quantity of antiquities and bones, and two canoes. In the drainage of Lough Faughan, County Down, another ‘dug-out’ canoe was found. During the work of the Commission for the Arterial Drainage and Inland Navigation of Ireland, twenty-two crannogs were discovered in the Ballinamore and Ballyconnell districts. The report of the officers of the Board of Works may be thus briefly stated: The crannogs were generally circular, and from 60 to 80 feet in diameter; some were larger, of an oval shape. The stakes were mostly of young oak trees, from 4 to 9 inches broad, usually sunk in a single row; some, however, were double, and in a few cases treble. The portions remaining in the ground usually showed hatched marks. Within the enclosure, the surface was sometimes covered over with a platform of round logs, from 4 to 6 feet in length, on which was a layer of mixed stones, clay, or gravel. This construction was in some cases confined to a portion of the island. ‘Besides these, pieces of oak framing, with mortises and cheeks cut in them, have been found within the circle of the outer work.’ In almost every instance a hearth made of flat stones was found near the centre of the crannog; and in some instances two or three such hearths existed. One or more querns were usually discovered; and upon the enclosure or around it were found large quantities of bones, usually those of cattle, deer, and swine.