On May 22nd 1904, one of the workmen engaged on the restoration of the Erechtheion noticed an inscribed fragment of white marble lying on the surface of the ground a little to the west of that temple. It was afterwards deposited in the Acropolis Museum, where I was able to take a copy and a squeeze by the kind permission of Mr. D. Philios, Ephor of the Acropolis, to whom my warm thanks are due for giving me permission to publish the inscription, as also to Mr. G. P, Stevens of the American School at Athens, who first drew my attention to the discovery of the stone. The fragment in question is 15 m. long, 14 m. broad and 10 m. thick, and contains portions of ten lines.