The views, that I have adopted, are in general agreement with those favoured by Mr. Petrie, and as he, an Egyptologist and archæologist, has thrown light on the subject from his standpoint, I propose to make the same attempt from my point of view as the Public Works officer in charge of the irrigation of the Fayûm. The working out of the problem of Lake Mœris would seem to require an alliance between a palæontologist, an archæologist, an Egyptologist, a geologist, and a hydraulic engineer. The following is copied from ‘Hawara, Biahmu, and Arsinoë,’ by W. M. Flinders Petrie, published in 1889:— “Medinet el Fayûm (Plate XVII.) is the modern town which represents the ancient Arsinoë, so named by Ptolemy Philadelphos in honour of his sister-wife; it lies at the extreme south of the old site, which covers a space of over a mile long and half a mile wide, a vast wilderness of mounds strewn with pottery. At the opposite end of the ruins, toward the north, is the great temple enclosure of the old Egyptian town. Before its name of Arsinoë, the city had obtained the name of Crocodilopolis, from the worship of the sacred crocodiles maintained there; and still earlier it was known as Shed, meaning, apparently, that which is saved, cut out, delivered, or extracted, referring to the district being reclaimed from the great lake. The whole province was known as Ta-she, ‘the land of the lake’; and, whatever may have been the mistakes of historians about Lake Moiris, there is no doubt that the lake was the main feature of the district. [Illustration: PLATE XVII. VIEW OF MEDINET EL FAYÛM, WHICH OCCUPIES PART OF THE SITE OF THE ANCIENT TOWN CALLED SUCCESSIVELY “SHED,” “CROCODILOPOLIS,” AND “ARSINOË.”]