LIST OF PLATES. 
Page. 
I. Plan of the Nile Valley 12 
II. Longitudinal Section of the Nile Valley .. 14 
III. Outlet of Lake Victoria . 26 
IV. Cross sections of the Nile and its tributaries (1) 28 
V. Gauge diagrams of Lakes Victoria and Albert 30 
VI. The Sudd region 34 
VII. Outlet of Tsana Lake 44 
VIII. Gauge diagrams of the White and Blue Niles at Khartoum . . 46 
IX. Cross sections of the Nile and its tributaries (2) 42 
X. Longitudinal section of the Nile: Wady Haifa to Assuan. . . 48 
XI. Cross sections of the Nile and its tributaries (3) 52 
XII. Longitudinal section of the Nile: Assuan to Cairo 50 
XIII. Typical cross sections of the Nile Valley 50 
XIV. Plan of typical basin irrigation in Egypt 66 
XV. Plan of the Fayoum and the Wady Payan . . 76 
XVI. Longitudinal section of the Fayoum and the Wady Rayan . . 80 
XVII. „ „ „ Rosetta Branch 54 
XVIII. „ „ „ Damietla Branch 54 
XIX. Plan of typical perennial irrigation in Egypt 68 
XX. Possible tunnel at Lake Tsana 103 
XXI. The Egyptian oases 108 
