Name given without any sufficient reason to a Byzantine land-surveyor who wrote (about A.D. 938) a treatise on land-surveying modelled on the works of Hero of Alexandria, especially the Dioptra.

1

  See “Géodésie de Héron de Byzance,” published by Vincent in Notices et extraits des manuscrits de la Bibliothéque Impériale, xix. 2 (Paris, 1858), and T. H. Martin in Mémoires présentés à l’Académie des Inscriptions, 1st series, iv. (Paris, 1854).

2