The third part of The principles of the art militarie : practised in the warres of the United Provinces, vnder the lords the States Generall, and his Highnesse the Prince of Orange, treating of severall peeces of ordnance, carriages, engines, quadrants, morters, petards, as also instructions for master gunners, and canoniers, with diverse instruments, and materials belonging to a warre with their severall vses, and practises most briefly, and lively demonstrated by letter and figure. Together with a list of all necessarie preparations, appertayning to an armie, with a quarter for the generall of the ordnance, and of all officers belonging to his traine. / VVritten and composed by Captaine Henry Hexham, quarter-master to the truely honorable Colonell Goring his regiment, for the lovers of the noble art militarie.