Those who contend for this being the genuine shell say, that, when on the 1st of May, 1793, the revolutionary mob came howling into the castle-court, with the intention of destroying every relic of royalty, the precious shell was hastily removed, and _another put in its place_, belonging to a loyal subject who had been induced to sacrifice his own to save the public treasure. M. de Beauregard had, it seems, a cabinet of natural history, in which was a tortoise-shell of very similar size and appearance: this he gave up, and, with the assistance of other devoted persons, it was conveyed to the castle, and put into the accustomed place, while the real shell was carefully hidden in a secure retreat. The mob seized upon the substitute, and, with frantic cries, danced round the fire in the court while they saw it burn to ashes, little dreaming how they had been deceived: years after, the truth was revealed, and the cradle of the Béarnais was produced in triumph. Whether, in the midst of the terror attending the proceedings of savages athirst for blood, it was likely that such cool precautions were taken to save a _relic_ when _lives_ were at stake, is a question which seems easily answered; but there is such a charm about the belief, that, perhaps, _'tis folly to be wise_ on the subject. The fine marble statue of Henry, which is appropriately placed in one of the chambers, was executed soon after the battle of Ivry: it is by Francavilla, and very expressive: it belonged to the Gallery of Orleans, and was presented to the town of Pau by the King. The room said to be that where Henry was born, and where Jeanne d'Albret sang the famous invocation, "_Notre Dame au bout du Pont_," is on the second story of a tower, from whence, as from all this side of the castle, is a magnificent view of the mountains, and the valley of the Gave. There is nothing now left but bare walls; but on the chimney is sculptured the tortoise-shell cradle, and the arms of Béarn and Navarre; these rooms will be all repaired and restored; at present, the whole _suite_ reminded me of the desolation of the castle of Blois, which was desecrated in the same manner by soldiery, who made it a barrack. The room which was Henry's nursery has a few of the original rude rafters of the ceiling remaining, which one would wish should not be removed; but it is said that it is necessary. The thick coating of whitewash cleared away from the chimney-piece will, probably, disclose more sculpture, similar to that in the other rooms.