The Britons, taking advantage of this interval, returned to their usual occupations; and the favourable seasons which succeeded seconded their industry, made them soon forget their past miseries, and restored to them great plenty of all the necessaries of life. No more can be imagined to have been possessed by a people so rude, who had not, without the assistance of the Romans, art of masonry sufficient to raise a stone rampart for their own defence; yet the Monkish historians [x], who treat of those events, complain of the luxury of the Britons during this period, and ascribe to that vice, not to their cowardice or improvident counsels, all their subsequent calamities. [FN [x] Gildas. Bede, lib. 1. cap. 14.] The Britons, entirely occupied in the enjoyment of the present interval of peace, made no provision for resisting the enemy, who, invited by their former timid behaviour, soon threatened them with a new invasion. We are not exactly informed what species of civil government the Romans on their departure had left among the Britons; but it appears probable, that the great men in, the different districts assumed a kind of regal though precarious authority; and lived in a great measure independent of each other [y]. To this disunion of counsels were also added the disputes of theology; and the disciples of Pelagius, who was himself a native of Britain, having increased to a great multitude, gave alarm to the clergy, who seem to have been more intent on suppressing them, than on opposing the public enemy [z]. Labouring under these domestic evils, and menaced with a foreign invasion, the Britons attended only to the suggestions of their present fears; and following the counsels of Vortigern, Prince of Dumnonium, who, though stained with every vice, possessed the chief authority among them [a], they sent into Germany a deputation to invite over the Saxons for their protection and assistance. [FN [y] Gildas. Usher, Ant. Brit. p. 248, 347. [z] Gildas. Bede, lib. 1. cap. 17. Constant. in vita Germ. [a] Gildas. Gul. Malm. p 8.]