The interposition of Lord Carlisle, to whose authority it was found necessary to appeal, had more than once given a check to these disturbing indulgences. Sanctioned by such support, Dr. Glennie even ventured to oppose himself to the privilege, so often abused, of the usual visits on a Saturday; and the scenes which he had to encounter on each new case of refusal were such as would have wearied out the patience of any less zealous and conscientious schoolmaster. Mrs. Byron, whose paroxysms of passion were not, like those of her son, "silent rages," would, on all these occasions, break out into such audible fits of temper as it was impossible to keep from reaching the ears of the scholars and the servants; and Dr. Glennie had, one day, the pain of overhearing a school-fellow of his noble pupil say to him, "Byron, your mother is a fool;" to which the other answered gloomily, "I know it." In consequence of all this violence and impracticability of temper, Lord Carlisle at length ceased to have any intercourse with the mother of his ward; and on a further application from the instructor, for the exertion of his influence, said, "I can have nothing more to do with Mrs. Byron,--you must now manage her as you can." Among the books that lay accessible to the boys in Dr. Glennie's study was a pamphlet written by the brother of one of his most intimate friends, entitled, "Narrative of the Shipwreck of the Juno on the coast of Arracan, in the year 1795." The writer had been the second officer of the ship, and the account which he had sent home to his friends of the sufferings of himself and his fellow-passengers had appeared to them so touching and strange, that they determined to publish it. The pamphlet attracted but little, it seems, of public attention, but among the young students of Dulwich Grove it was a favourite study; and the impression which it left on the retentive mind of Byron may have had some share, perhaps, in suggesting that curious research through all the various Accounts of Shipwrecks upon record, by which he prepared himself to depict with such power a scene of the same description in Don Juan. The following affecting incident, mentioned by the author of this pamphlet, has been adopted, it will be seen, with but little change either of phrase or circumstance, by the poet:--