Time passed, and Aymon heard no more of the reward promised by the cardinal. He began to murmur, and to pour his complaints into the reluctant ear of Clement, who soon became so tired of hearing them, that the appearance of Aymon's discontented face in the library was a signal for him to plead business and hurry into another apartment. Aymon declared that he should most positively publish nothing till the king or the cardinal made up to him the losses he had endured by resigning his post in Holland.

All of a sudden, to Clement's great relief, Aymon disappeared from the library. At first he was satisfied to be freed from him, and made no inquiries; but after a while, hearing that he had also left the Missions Etrangères, he made search for the missing man. He was nowhere to be found.

About this time Aymon's congregation at the Hague were gratified by the return of their pastor, not much bronzed by exposure to the sun of Constantinople, certainly, but with his trunks well-stocked with valuable MSS.

A little while after, M. Clement received the following note from a French agent resident at the Hague:—

"Information is required relative to a certain Aymon, who says that he was chaplain to M. le Cardinal de Camus, and apostolic protonotary. After having lived some while at the Hague, whither he had come from Switzerland, where he had embraced the so-called Reformed religion, he disappeared, and it was ascertained that he was at Paris, whither he had taken an Arabic Koran in MS., which he had stolen from a bookseller at the Hague. He has only lately returned, laden with spoils—thefts, one would rather say, which he must have made at Paris, where he has been spending five or six months in some publicity.... He has with him the Acts of the last Council of Jerusalem held by the Greeks on the subject of Transubstantiation, and some other documents supposed to be stolen from the Bibliothèque du Roi. The man has powerful supporters in this country.—March 10, 1707."

The "Council of Jerusalem" was one of the most valuable MSS. of the library—and it was in the hands of Aymon! Clement flew to the cabinet where this inestimable treasure was preserved under lock and key. The cabinet was safely enough locked—but alas! the MS. was no longer there.

A few days after, Clement heard that Aymon had crossed the frontier with several heavy boxes, which, on inquiry, proved to be full of books. What volumes were they? The collections in the Royal Library consisted of 12,500 MSS. The whole had to be gone through. It was soon ascertained that another missing book was the original Italian despatches and letters of Carlo Visconti, Apostolic Nuncio at the Council of Trent.

There was no time to be lost. Clement wrote to the Hague to claim the stolen volumes, and to institute legal proceedings for their recovery, before the collection could be dispersed, and he appointed, with full powers, William de Voys, bookseller at the Hague, to seize the two volumes said to be in the possession of Aymon.

A little while after some more MSS. volumes were missed; they were "The Italian Letters of Prospero S Croce, Nuncio of Pius IV," "The Embassy of the Bishop of Angoulême to Rome in 1560-4," "Le Registre des taxes de la Chancellerie Romaine," "Dialogo politico sopra i tumulti di Francia," nine Chinese MSS., a copy of the Gospels of high antiquity in uncial characters, another copy of the Gospels, no less valuable, and the Epistles of S. Paul, also very ancient.

Shortly after this, two Swiss, passing through the Hague, were shown by Aymon some MSS. which agreed with those mentioned as lost from the Royal Library; but besides these, they saw numerous loose sheets, inscribed with letters of gold, and apparently belonging to a MS. of the Bible. Clement had now to go through each MS. in the library and find what had been subtracted from them. Fourteen sheets were gone from the celebrated Bible of S. Denys. From the Pauline Epistles and Apocalypse, a MS. of the seventh century, and one of the most valuable treasures of the library, thirty-five sheets had been cut. There were other losses of less importance.