VIII. Section of the Fayûm through the Linant Lake 31 IX. Diagram to scale showing Outline of Linant Lake 33 X. Cross sections of Minia Wall and Edwah Bank 35 XI. Linant’s and actual Sections of the Fayûm 36 XII. Part of Egypt from Map of Cl. Ptolemy 45 XIII. Proposed Wadi Raiân Reservoir 46 XIV. Exterior, Schweinfurth’s “Temple.” _From a Photograph taken by the Author_ _To face_ 51 XV. Interior, Ditto. _From a Photograph taken by the Author_ _To face_ 53 XVI. Ground plan, Ditto 53 XVII. Medinet-el-Fayûm. _From a Photograph taken by the Author_ _To face_ 57 XVIII. Cross section of 50 miles on lat. 30° 63 XIX. Contoured Diagram of the Fayûm Depression 65 XX. Map of Lake Mœris 73 XXI. Map to show position of Edwah Bank and supposed Lake Mœris Regulators 75 XXII. Biahmu Ruins. _From a Photograph taken by the Author_ _To face_ 77 XXIII. Restoration of Biahmu Ruins by Petrie 84 XXIV. Modified representation of Biahmu Ruins Restored 86 XXV. Sections of Bahr Yûsuf Valley and Ravine behind Hawârat-el-Maqta 98 XXVI. Sketch Map of the ground between Hawârat-el-Maqta and Hawârah Pyramid 100 XXVII. Sections of Lahûn Banks 103 Map of the Fayûm Province End of Book THE FAYÛM AND LAKE MŒRIS. * * * * * INTRODUCTION. I commenced this paper with the sole object of giving a technical description of irrigation in the Fayûm Province as practised to-day, for the information of my brother officers in the Royal Engineers. But let any one turn his face towards the Fayûm, he is sure to see the speculator’s will-o’-the-wisp of Lake Mœris, which must needs be followed over the marshy borders through a tangle of theories left high and dry, until the pursuer is submerged deep beneath the waters of the lake, and has to find his way out again as best he can with a theory of his own begetting or adopting.