The megalithic monuments recognized by the archaeologist are of several kinds, but we shall be here concerned with three of these groups--the menhir, or single upright stone; the cromlech, or stone-circle; and the dolmen, or “stone-table.” These prehistoric remains seem to have seriously attracted the notice of the Teutonic invaders, who were prone to follow idolatrous practices based upon lingering traditions about the storm-fretted stones. To this superstitious respect attention has been drawn in a previous work[107]. Some indications of the honour imputed to these megaliths is gleaned from a study of parish boundaries, though it is almost certain that many of the stones erected in such positions belong to the historic period. The old open-air tribunals, too, were wont to meet at barrows, cairns, cromlechs, and menhirs, and at the foot of the crosses by which the menhirs were largely supplanted. This statement holds true for other places besides England. In the churchyard of Ste Marie du Castel, Guernsey, there existed three large stones, which marked the spot where open-air courts were held until recent years[108]. Evidence is also obtainable from several countries, showing that the election and coronation of kings and princes were associated with stone-circles. Nor, indeed, were our ancestors very exigent in this matter; a rude natural boulder or monolith was considered a good substitute for the artificial pillar which had been erected by forgotten folk. Over and over again we meet with “blue-stones”--chiefly glacial boulders--which were set up to mark the limits of a parish, or to form the trysting-place of a manorial court[109]. Lastly, it is on record that Patrick, Bishop of the Hebrides, desired Orlygüs to build a church wherever he found the upright stones or menhirs. [Illustration: FIG. 8. The Agglestone, Studland Heath, Dorsetshire. A natural mass of concretionary sandstone belonging to the Bagshot sands of the district. Much pagan tradition is associated with this block, which has been curiously eroded by rain, frost, and wind. The so-called “Druid’s basins” are altogether natural cavities. ]