The rules for composition there laid down are, perhaps, somewhat pedantic. His philosophical writings were La Morale d'Epicure tiree de ses propres ecrits (1758), and the Histoire des causes premieres (1769).
Athenes et ses environs (Paris, 1896); Meyer's Turkei and Griechenlander (5th ed., 1901).
An aqueduct pa?;ses over it.
Ducarla, published his La France consideree da p s les dijferentes hauteurs de ses plaines (1791), upon which equidistant contours at intervals of 16 toises found a place.
He published in 1867-1868 a treatise in two volumes on La Lumiere, ses causes et ses effets.
