Fortunately his manuscripts had been preserved, and extracts were appended to a reprint of his Puissance motrice by his brother, L.
C. Loyseau, in his Traite des seigneuries (3rd ed., 1610, p. 14), explains that there are two kinds of public seigneuries, that is, sovereign seigneurs, possessing summum imperium, and suzerains, " Les suzeraines sont celles qui ont puissance superieure mais non supreme."
Lamouche, L'Organisation militaire de l'empire ottoman (Paris, 1895); LebrunRenaud, La Turquie: puissance militaire (Paris, 1895); Hauptman Rasky, Die Wehrmacht der Tiirkei (Vienna, 1905).
The only work he published was his Reflexions sur la puissance motrice du feu et sur les machines propres a developper cette puissance (Paris, 1824).
He makes clear this conception of protection by adding " l'advoue ou adherent doit estre exempte de la puissance du protecteur s'il contrevient aux traictes de protection.
His attitude towards Napoleon was not lacking in independence, but in this controversy with the pope, the emperor was able again to secure from him the learned treatise Sur la puissance temporelie du Pape (1809).