"Henry was a strong, healthy boy, who had never known a day's sickness; but Aleck was a weak, delicate, nervous little fellow, who could bear no excitement nor fatigue. Different as they were, however, the affection between them was very great. Gentle little Aleck looked up to his elder and stronger brother with a love and confidence which were beautiful to see, while the chief purpose of Henry's life at this time was to fulfil the charge which his mother had given him to care for Aleck, and keep him as far as he could from all trouble and harm, looking upon it as a sacred trust.