In the course of a long successful practice, the original of Pleydell acquired some wealth; and, at the time when the New Town of Edinburgh began to be built, with an enthusiasm prevalent at the period, he conceived the best way of laying out his money to be in the erection of houses in that noble and prosperous extension of the city. He therefore spent all he had, and ran himself into considerable debt, in raising a structure which was to surpass all the edifices yet erected, for making the design of which he employed that celebrated architect, Mr. James Craig, the nephew of Mr. Thomson, who planned the New Town on its projection in 1767. The house which Mr. Crosbie erected was to the north of the splendid mansion built by Sir Lawrence Dundas, which subsequent times have seen converted into an excise-office; and as the beauty of Mr. C.’s house was in a great measure subservient to the decoration of Sir Lawrence’s, that gentleman, with his accustomed liberality, made his tasteful neighbour a present of five hundred pounds. Yet this _bonus_ proved, after all, but an insufficient compensation for the expense which Mr. Crosbie had incurred in his sumptuous speculation; and the unfortunate barrister, who, by his taste, had attracted the wonder and envy of all ranks, was thought to have made himself a considerable loser in the end. While it was yet unfinished, he removed from Allan’s Close, and, establishing himself in one of its corners, realized Knickerbocker’s fable of the snail in the lobster’s shell. He lived in it for some time, in a style of extravagance appropriate to the splendour of his mansion; till, becoming embarrassed by his numerous debts, and beginning to feel the effects of other imprudencies, he was at last obliged to resort to Allan’s Close, and take up with his old abode and his diminished fortunes. About this period his constitution appeared much injured by his habits of life, and he was of course unable to attend to business with his former alacrity. An incipient passion for dogs, horses, and cocks, was another strong symptom of decay. To crown all, he made a low marriage with a woman who had formerly been his menial, and (some said) his mistress; and as this tended very much to take away the esteem of the world, his practice began to forsake, and his friends to neglect him. It was particularly unfortunate that, about this time, he lost the habit of frequenting one particular tavern, as he had been accustomed to do in his earlier and better years. The irregularity consequent upon visiting four or five of a night, in which he drank liquors of different sorts and qualities, was sufficient to produce the worst effects. Had he always steadily adhered to Clerihugh’s or Douglas’s, he might have been equally fortunate with many of his companions, who had frequented particular taverns, through several generations of possessors, seldom missing a night’s attendance, during the course of fifty years, from ill health or any other cause.