They had spent a most interesting hour at the Royal Mews, and, rare good fortune, the best was yet to come. They means Mr. Harris and Marie-Celeste and Albert, and the Royal Mews--since to the average little American the words doubtless are wholly unintelligible--means the royal stables. Mr. Harris and Marie-Celeste had called by appointment in the phaeton lor Albert, and then leaving the ponies in the care of a groom at the entrance to the stable courtyard, in company with another groom they had visited the royal horses. The place as a whole was rather disappointing to our little party. Harold, who had been all through the stables of the Duke of Westminster at Eton Hall, had described something much finer than this--imposing buildings surrounding a courtyard paved with bevel-edged squares of stone, with not so much as a whisp of hay or straw to be seen anywhere, and in the centre a noble statue of a high-spirited horse, rearing and pulling hard at the bridle, held in the hand of a stalwart groom, who seems fully equal to the occasion. Here there was nothing of the sort, and yet these were the Queen's stables. Ah, well! these were old and the Duke's were new, and perhaps the royal family were trying to avoid extravagance, and that was of course very commendable. But what seemed lacking in elegance of appointment was made up in the number of horses; and happening to enter one of the courtyards just as three of the court carriages were about to be driven out of it, the children were intensely interested. Marie-Celeste opened her eyes wide for wonder at the novel sight of a coach and four, but with no reins anywhere about the harness, and not so much as the suggestion of a scat for the coachman. The mystery of how they were to be driven was solved in a moment, however, when a faultlessly equipped groom threw himself astride of one of the leaders, and the stablemen, standing at the bridles of the four-in-hand, at one and the same moment let go their hold, and sprang quickly out of the way. It was very inspiring and exciting to see the three coaches, that were to convey some royal guests to the depot, leave the courtyard one after the other, the horses in each case prancing in wildest fashion and perfectly free, apparently, with the exception of the one mounted leader, to do any outlandish thing that they chose.