When the Northmen swooped down upon a district, priests and people would hasten to the nearest tower. Thither the fugitives carried their most precious possessions: manuscripts, relics, sacred vessels, and vestments. Some objects of this kind may have been housed in the tower permanently. Once gathered within their asylum, the inhabitants were comparatively secure. They could hurl stones and other projectiles from the narrow loopholes, while they themselves were safe from danger, at least, until relief arrived. On the other hand, missiles thrown by the besiegers, either from the hand or a catapult, would rarely hit the defenders inside. A successful battery could not be made in a few minutes, and even firing the stone tower was not a speedy mode of overpowering the refugees. After the Danish incursions came to an end, the towers would still serve as spy-places against native enemies, as “strongrooms” for protection against thieves, and, probably, as we have seen, as bell-towers for raising alarms. The pattern of the tower, moreover, would long survive its original necessity. Summing up, we may say that the round towers were defensive buildings, the use of which was mainly secular, but to some extent ecclesiastical also. Perhaps we ought rather to say that the religious and the secular uses were so blended that no demarcation could be made. The round towers suggest to us parallel usages in England. The first similarity is that of the detached church tower, which is not a rare feature in our Gothic architecture. Selecting a few examples from a numerous list, we notice the isolated tower of Walton, Norfolk; Berkeley, Gloucestershire; Evesham, Worcestershire; and Ledbury, Herefordshire. The last-named county supplies several instances, a fact not without interest, in view of the geographical position. Bosbury tower, Hereford, is situated 60 yards from the South side of the church; while that of Pembridge, which stands on an eminence, is 25 yards distant from the main body of the building. As with the hill-top churches, the peasantry generally have a tradition to explain the anomaly. Thus, at Warmsworth, Yorkshire, two sisters, charitable, but obstinate, are said to have made a bequest for the building of a church. Each lady had chosen a site for the church; neither would give way. The fabric was in consequence built in detached portions. The bells call the folk to church in one direction, the congregation walks away to service in another. Obviously, the ordinary folk-tales, as told nowadays, do not fully explain the facts. In several cases, as at Wickes and Wrabness, in Essex, and at Brookland in Romney Marsh, it is evident, from the size and construction of the tower, that it was built, not for hanging bells, but for defence and refuge. The English detached towers, it will be remarked, are usually square, not circular. The round detached tower of Bramfield, in Suffolk, is an exception, and there may be others.