The various excuses made by Matthioli, for the non-execution of his agreement, all more or less frivolous, appear first to have given to the French Government a suspicion of his fidelity. Whether the reception of Matthioli at the French court had not been such as he expected, though it would appear to have been most gracious; or whether, which is more probable, the sum of money there given to him did not content him;--or whether, which is also probable, the Spaniards having got some knowledge of the transaction, had offered him a still larger bribe, it is impossible for us, at this distance of time, exactly to decide; but it appears evident, that, from the time of his return from Paris, his conduct with regard to the negociation became entirely changed; and he was as anxious to procrastinate, as he had formerly been to advance it. It was, therefore, natural for the French diplomatists to conclude, supported as this opinion also was by various circumstantial evidence, that he had been bought by the other side--a circumstance of no extraordinary occurrence in the career of a needy Italian adventurer. His weak and timid master followed implicitly his counsels; but appears to have been himself in the intention of acting fairly and faithfully by the French Government. The first intimation that is given in the correspondence of the suspicions, with regard to the conduct of Matthioli, occurs in a letter from Pomponne[55] to Matthioli himself, dated February 21st, 1679, in which he says that Lewis “is unwilling to doubt that the promise which has been so solemnly made[56] him will not be kept;” an expression which certainly seems to imply, that some doubt did exist in the mind of Lewis and of his ministers upon the subject. The next is an elaborate and skilful letter of Estrades to Matthioli, written on the 24th of March, 1679,[57] from Turin, where he was then awaiting the execution of the treaty, in which he mingles promises and threats to encourage him to perform his stipulations; and shows sufficiently his suspicions to the object of them, to frighten him; at the same time leaving open the hope of forgiveness in case of future good conduct. By the subsequent letters[58] of Pomponne to Pinchesne, it appears, that the treachery of Matthioli soon became more apparent. Indeed, Estrades, during his stay at Turin, obtained the most indubitable evidence of the fact; for the Duchess of Savoy[59] showed to him the copies of all the documents relative to the negociation respecting Casale, which Matthioli had given to the President Turki, one of her ministers who was in the interests of Spain, when he passed through Turin on his return from Paris.[60] From Turki, as it subsequently appeared, Matthioli had received a sum of money for his information.[61]