"Sir: As time does not permit of a regular summons being sent to you by an usher of the court, I beg you to be so good as to come to Paris immediately, the day after to-morrow if possible, and attend at my office, where your depositions are absolutely required to conclude a case in which you are interested. Please bring, without exception, all the papers and documents entrusted to you by the Clerk of Assizes at Cahors, at the conclusion of the Langrune enquiry." "It is signed Germain Fuselier," Dollon remarked. "I've often seen his name in the papers. He is a very well-known magistrate, and is employed in many criminal cases." He read the letter through once more, and turned to the postman. "Will you take a glass of wine, Muller?" "That's a thing I never say 'no' to." "Well, go into the house with Jacques, and while he is attending to you I will write a reply telegram which you can take to the office for me." While the man was quenching his thirst Dollon wrote his reply: "Will leave Verrières to-morrow evening by 7.20 train, arriving Paris 5 A.M. Wire appointment at your office to me at Hôtel Francs-Bourgeois, 152 rue du Bac." He read the message over, signed it "Dollon" and considered. "I wonder what they can want me for? Oh, if only they have found out something about the Langrune affair, how glad I shall be!" XXIV. UNDER LOCK AND KEY After the preliminary examination as to his identity and so on, Gurn had been transferred to the Santé prison. At first the prisoner seemed to have terrible difficulty in accustoming himself to the rigours of confinement; he suffered from alternate paroxysms of rage and despair, but by sheer strength of character he fought these down. As a prisoner on remand he was entitled to the privilege of a separate cell, also during the first forty-eight hours he had been able to have his meals sent in from outside. Since then, however, his money had given out, and he was obliged to content himself with the ordinary prison dietary. But Gurn was not fastidious; this man whom Lady Beltham had singled out, or accepted, as her lover had often given proofs of an education and an intelligence above the average, yet now he appeared quite at ease in the atmosphere of a prison. * * * * * Gurn was walking quickly and alone round the exercise yard, when a breathless voice sounded in his ear. "'Gad, Gurn, you know how to march! I was going to join you for a bit, but I could not keep up with you." Gurn turned and saw old Siegenthal, the warder in charge of his division, in whose custody he was particularly placed. "My word!" the old fellow panted, "anybody could tell you had been in the infantry. Well, so have I; though that wasn't yesterday, nor yet the day before; but we never marched as fast as you do. We made a fine march once though--at Saint-Privat."