He compiled the history and did an analysis of the writings of all the ecclesiastical writers of the first thirteen centuries.
About this time he conceived the idea of his Bibliotheque universelle de tous les auteurs ecclesiastiques, the first volume of which appeared in 1686.
The best known of these are: Scripturae sacrae cursus completus, and Theologiae cursus (each in 28 vols., 1840-1845); Collection des auteurs sacres (ioo vols., 1846-1848); Encyclo pedie theologique (171 vols., 1844-1866); Patrologiae cursus completus, Latin series in 221 vols.
Especially valuable and lucid are the following works: Ernest Mercier, Histoire de l'Afrique septentrionale (Berberie) (3 vols., Paris, 1891), and Histoire de l'etablissement des Arabes dans l'Afrique septentrionale selon les auteurs arabes (Paris, 1875); Stanley Lane Poole, The Barbary Corsairs (" Story of the Nations Series," London, 1890), deals in part with the history of Tunisia.
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