If it be not blasphemy to suggest any inefficiency in our Teutonic cousins, I should suggest that the pin was a thought too long and capable, on careless handling, of biting the hand that fed it. But for any such trifling defect the grey colour of the new and more expensive mounting, resembling that of a leaded grate, and the awful severity of its odd rectangles and unexpected heavings of its re-entrant curves, made ample atonement. Such was the aspect of the Emerald of Catherine the Great in the winter when it entered upon its liveliest activities. CHAPTER TWO About a fortnight had passed since Mr. de Bohun had given his daughter Marjorie the family mascot. It was Friday, the 30th of January, 1930: the weather unpleasantly cold, overcast, with a threat of snow, and the dark already set in. After the heavy strain of an English working week, especially in Parliament, complete relaxation is necessary from Friday after lunch to the Monday's return to town by the afternoon. Nor was any mansion more fitted to recuperate the exhausted energies of statesman or politician than Paulings. It had been built in the classical manner some twenty years before the decline of the Parrall fortunes, which got their worst blow after the year 1745. It was classical and highly symmetric; its fine great doors had been designed to stand slightly above the level of the drive and looked upon a shallow sweep of stone stairway. Upon either side of them, windows in the Palladian fashion, with a pediment above each, announced the wealth within; a hanging wreath of flowers and fruit in stone went the length of the great wall, and against the sky was a balustrade. That was all very well for the eighteenth century; but the nineteenth and the new wealth of the de Bohuns put on useful excrescences. There was a bulb to the east, and yet another bulb at the end of that, where new stables, now a garage, were added to new offices, and on the west there had been built, a little after the Crimean War, something like half as much again of house room, in a manner pleasingly different from all the rest. Here a new and more convenient door gave into a large hall, not without suits of armour purchased at considerable expense, and giving by various doors into the larger, older, and grander rooms of the house, into a panelled dining-room, a large drawing-room, too often changing in style, and on the extreme west a room very rarely used save for the reception of whatever was not wanted about the living parts of the house, or--in theory at least--for the complete seclusion of its master, when--in theory--his heavy responsibilities demanded heavy concentration. This room we must know, for it was here that blind Fate, an all-seeing Providence, or--more probably--a lively and mischievous sprite had laid the scene of the loss of the Emerald.