Necessity is the mother of invention. This is undoubtedly true, but it is equally true that invention is not the only member of necessity's large family. Change of scene and circumstance are also among her children. It was necessity that gave birth to the resolve to travel to the end of the earth-of English earth at all events-in search of fortune, which swelled the bosom of yonder tall, well-favoured youth, who, seated uncomfortably on the top of that clumsy public conveyance, drives up Market-Jew Street in the ancient town of Penzance. Yes, necessity-stern necessity, as she is sometimes called-drove that youth into Cornwall, and thus was the originating cause of that wonderful series of events which ultimately led to his attaining-but hold! Let us begin at the beginning.