So much so that, tired of waiting, M. Longuet walked down as far as H to see what was happening. There he saw the staff of A, which was hurrying towards B in its search for the express. He asked himself sadly what could have become of the express; and finding no answer to the question, he walked up H I, and when he arrived at K, which he had just left, he found the empty guard's-van and the railway-carriage which a few minutes later the two staffs were to find at D!

Once more he swore by the throttle of Mme. Phalaris, and buried his brow in his hands, asking himself how that guard's-van and that carriage came to be there, since the express itself had not come. It had not come, since he, Theophrastus, had not quitted the track.

Suddenly he saw the head of a man waggling out of the window of the railway-carriage; and since this head had no ears, he recognised Signor Petito.

He sprang up into the railway-carriage, and without troubling to let down the window and release the head of the unfortunate expert in handwriting, he stripped him of his clothes, and proceeded to put them on. Theophrastus, who knew himself to be tracked by the police and in whom the astuteness of Cartouche sprang to life again, was disguising himself. When he was dressed, he made a bundle of his own clothes, and descended from the carriage. He felt in Signor Petito's pockets, took out his pocket-book, sat down on the embankment, and plunged into the study of the papers it contained, hunting for the traces of his treasures. But Signor Petito had carried to the tomb the secret of the treasures of the Chopinettes; never again were the Gall, the Cock, the Chopinettes, or the treasures to be discussed: with the result that Signora Petito, who learnt a few minutes later of the extraordinary death of her husband, presently went mad, and was confined in a lunatic asylum for six months.

But we are only concerned with the misfortune of Theophrastus, which so surpasses all other human misfortunes, and which is so hard to believe that we need all the assistance that Science can give us to credit it wholly. I cannot believe that the minds of my readers are so base, or their imaginations so poor, that the matter of the treasures could be of any genuine interest to them, when they are confronted by this phenomenon, of such surpassing interest, the soul of Theophrastus.

Presently that unfortunate man, on failing to find anything of interest to him in the papers of Signor Petito, heaved a deep sigh. He raised his head; and lo! the guard's-van and the railway-carriage of Signor Petito had disappeared!

[CHAPTER XXIII]
THE MELODIOUS BRICKLAYER

Theophrastus, though he had with good reason made up his mind never again to be astonished by anything, was nevertheless astonished by the disappearance of the railway-carriage, with the earless head of Signor Petito waggling in the wind. With a melancholy air he walked down the little side-line, asking himself whether he ought to be more astonished by the disappearance of the carriage than by its sudden appearance. In truth, the suppression of the express was troubling his spirit deeply.

It seems to me that I, who know the secrets of the sandalwood box, have no right to give the explanation of this suppression before the hour at which Theophrastus learnt it himself, from a quite commonplace observation which the Commissary of Police, M. Mifroid, an earnest student of Logic from his earliest years, made to him in the Catacombs of Paris. At the same time, it is only fair to say that all the points in the problem are already in the possession of the reader, who can solve it himself, if indeed he has not already done so, without further delay. Theophrastus then, in a state of prostration, walked down the side-line, arrived at the bifurcation, examined the switch, thrust back the lever which he had thrust over, locked the padlock, and carried away, once and for all, the key which had been so carelessly left in it a few days before. He performed this action because he felt that it was only right; and he restored the switch to its place, because he felt that his reason could not stand another disappearance of the express.