The previous collections by Jacques Merlin, Petrus Crabbe and Lorenzo Surius appeared incomplete to him, lacking as they did explanatory notes. With the help of other scholars he prepared a new edition of the councils in four folio volumes (Cologne, 1606) under the title Concilia generalia et provincialia. It gives only the Latin text, and contains the acts of the councils, the decretal letters, and the lives of the popes.
The preceding collections by Jacques Merlin, Petrus Crabbe, and Lorenzo Surius seemed to him to be incomplete, lacking as they did detailed explanations. With the aid of other experts, he created a new edition of the councils in four folio volumes (Cologne, 1606) titled Concilia generalia et provincialia. This publication contains only the Latin text and includes the records of the councils, decretal letters, and biographies of the popes.