[Illustration: Fig. 3.--Stone Lake Dwelling in Lough Bola.]
_Theory of Crannogs being only Temporary Refuges._--The opinion has been frequently advanced that crannogs were merely refuges used in case of hostile incursion--not a general or habitual residence; and if a rath chance to be in the immediate vicinity, it is pointed out as the abode of the chief on shore. The great mass of bones, however, and remains of household gear, found upon and around some of the sites, point conclusively to their having been places of residence for long and various periods, and many of them bear signs which denote their having been often demolished, burnt, and rebuilt, the Celt clinging to his watery home with as much pertinacity as in latter days he clings to his cottage on terra firma. Keller was of opinion that the great distinction between the continental pile dwellings (_pfahlbauten_), and the crannogs of Ireland and kindred lake dwellings of Scotland, is that the latter served merely as places of refuge for chieftains, their families, and property, _i. e._ strongholds belonging to individuals, whilst the Swiss lacustrine dwellings were inhabited century after century by groups of families; here they fabricated their pottery, their utensils, their wearing apparel, their fishing implements, their weapons of warfare; and hence in Swiss waters rows of huts are found, each furnished with its hearth and its weaving loom. Although Irish and Scottish lacustrine dwellings may have been the abode of chiefs, yet the clan clustered around them, for in many Irish lakes a large crannog is observable, whilst in close proximity--sometimes connected with it--are others of smaller size and meaner construction; might we not fairly surmise that the larger one was the abode of the chief, the others those of his followers? The theory that these dwellings were places of merely temporary refuge can be refuted on many grounds. The evidences of repeated renovations and re-erection of crannogs after having been burnt,[52] also the traces of cattle, which appear to have been kept in them, the enormous quantity of bones contained in the kitchen middens, the hearths, the remains of fire, of cooking utensils, of spindle whorls, of household gear, the domestic arrangements made in each hut for the accommodation of a family, the various articles for personal adornment and for amusement, all tend to denote continuous occupancy; finally, we must bear in mind the enormous expenditure of time and labour that would be required for erection of what was, on such a theory, to serve only as a place of temporary shelter.