The early text-writers are not as instructive as might be hoped, owing to the influence of the Roman law. Glanvil, however, says in terms that, if a borrowed thing be destroyed or lost in any way while in the borrower's custody, he is absolutely bound to return a reasonable price. /3/ So does Bracton, who partially repeats but modifies the language of Justinian as to commodatum, depositum, and pignus; /4/ and as to the duty of the hirer to use the care of a diligentissimus paterfamilias. /5/ [176] The language and decisions of the courts are perfectly clear; and there we find the German tradition kept alive for several centuries. I begin with the time of Edward II., about 1315. In detinue the plea was that the plaintiff delivered the defendant a chest locked with his key, that the chattels were in the chest, and that they were taken from the defendant together with his own goods by robbery. The replication was that the goods were delivered to the defendant out of enclosure, and Fitzherbert says the party was driven to that issue; /1/ which implies that, if not in the chest, but in the defendant's custody, he was liable. Lord Holt, in Coggs v. Bernard, /2/ denies that the chest would make any difference; but the old books agree that there is no delivery if the goods are under lock and key; and this is the origin of the distinction as to carriers breaking bulk in modern criminal law. /3/ In the reign of Edward III., /4/ the case of a pledge came up, which seems always to have been regarded as a special bailment to keep as one's own goods. The defence was, that the goods were stolen with the defendant's own. The plaintiff was driven to reply a tender before the theft, which would have put an end to the pledge, and left the defendant a general bailee. /5/ Issue was taken thereon, which confirms the other cases, by implying that in that event the defendant would be liable.