The idea of solitude is so repugnant to human nature, that even death would be preferable. It can be therefore easily imagined that it was with feelings almost amounting to agony that Maclean saw himself separated from his last friend. His first impulse was to follow his companion, but better judgment prevailed, and he determined to await the result. Never for a single instant did his eyes turn from the bold swimmer: they followed his every stroke. At one time, he thought he had sunk; at another, the ripple of a wave appeared to his distorted imagination like the fin of a shark. Anxiety for the fate of his companion kept his mind on the stretch until distance rendered the object no longer visible. 'Then, indeed, did he feel that he was alone.' Meldrum was naturally a good swimmer, and every nerve was strained in this last struggle for life; buoyed up by hope, he had accomplished about two-thirds of his weary task when his strength began to fail, his dying eyes turned towards the brig, and with one last effort he raised his voice. He was heard: a boat was lowered from the brig, and he was taken on board. The perilous situation of his comrade was made known; and thus by his gallant exertions were preserved the lives of the two survivors, of the ill-fated Magpie. This tale might almost be discredited, but the facts from which it was taken bear the signature of the officers composing the court-martial who sat upon the two remaining men. Mr. Maclean is at the present moment alive, and is now serving as a lieutenant in the coast-guard. Meldrum was promoted for his gallantry to the rank of gunner, and died two years ago. THE THETIS.