A German compendium of the mathematical arts, with a strong emphasis on practical and mechanical matters. Furtenbach published texts on many individual topics, especially on various aspects of architecture, from civil to military to 'universal architecture'. In this larger work he referred back constantly to his prior publications, treating his text as a summation and synthesis of his earlier concerns. The arts of war figure prominently, through the discussion not just of fortresses on land but also of the fortification of islands. Furtenbach also considers naval architecture, gunnery and 'fireworks', in addition to many other mathematical arts such as astronomy, geography, perspective and navigation.