A Abai river, 13 Abu Zeid ford, 42 Abydos spring level, 67 Abyssinia, 13, 19, 43 Adarma, 45 Addis Ababa, 16, 20, 44, 214 Aird, Sir John, 75 Akobo, 37 Albert Lake, 11, 12, 14, 15, 18, 29, 30, 31 ---- ---- reservoir, 81, 82, 87, 90 ---- ---- tributaries, 31 Albert Nile in 1841, 38 ---- ---- catchment basin, 17, 119 ---- ---- description, 31-35 ---- ---- observed discharges, 129-134 ---- ---- discharges, 22, 56, 81, 82, 93 ---- ---- discharge table, 144, 145 ---- ---- gauges, 168-174 ---- ---- projects, 58, 81, 89-92 ---- ---- slopes, 14, 120 ---- ---- tributaries, 31, 32, 34 ---- ---- velocities, 15, 121 Alexandria, 20, 220 Ambatch, 31, 92 Amenemhat, 47, 66, 79 Analysis of water and soil, 62, 100-101 Anderson, Mr. Lang, 64 Appendices, 117 Arab, Bahr el, 36 Assiout Weir, 49, 150 Asua River, 32 Assuân gauge compared to Bombay rainfall, 213 ---- dam, 48, 61, 75, 76, 77, 87, 89 ---- distances from and to, 124, 125 ---- discharges, 25, 58-60, 139-142 ---- discharge table, 150 ---- gauges, 48, 52, 94, 97, 98, 153, 158, 164-166, 194-202, 209 ---- meteorological data, 20, 218 Atem river, 32, 33, 90 Atbara river, catchment basin, 17, 19, 119 ---- ---- description, 13, 45, 69 ---- ---- discharges, 24, 47, 58, 60, 138-140 ---- ---- discharge table, 149 ---- ---- gauges at Khashm el Girba, 188, 189 ---- ---- tributaries, 45 B Baharia Oasis, 109 Baker, Sir Benjamin, 75 Baker, Sir Samuel, 11, 34, 39, 40 Barometric readings, 215-220 Barois, M. J., 61, 62 Barrages, The, 50, 53, 54, 74, 82, 99, 123, 124, 151, 152, 207, 208 Basalt, 22, 114 Basin irrigation, 59, 65, 66, 67, 68, 79, 93, 94, 99, 100, 159-166 ---- ---- in the Sudan, 102 Beadnell, Mr. H. G. F., 107 Beresford, Mr. J. S., 89 Berkeley, Fort, 31 Berber, 46, 217 ---- gauges, 190-193 Blue Nile, catchment basin, 17, 119 ---- ---- description, 12, 13, 18, 21, 41, 43, 61 ---- ---- observed discharges, 129, 136, 137 ---- ---- discharges, 24, 46, 57, 60, 139-141 ---- ---- discharge table, 147, 148 ---- ---- distances along, 128 ---- ---- gauges, 179-182, 183-187 ---- ---- projects, 43, 44, 103 ---- ---- slope, 15 ---- ---- tributaries, 44 ---- ---- velocities, 44 Bombay, 20, 213 Bor, 32, 89, 99 Brown, Sir Hanbury, 66, 77, 79, 89, 99 C Cairo, 16, 20, 22, 24, 25, 50, 52, 53, 59, 94, 97, 98, 142, 150, 158, 164-166, 219 ---- gauges, 203-206, 210 Cassel, Sir Ernest, 75 Cataracts, 14, 46, 47, 48, 88, 102, 103 Catchment basins, 16, 18, 119 Chapters, 11, 26, 56, 73, 107 Chavanne, Joseph, 12 Chélu Bey, 5 Choga, Lake, 15, 28, 30, 121, 122 Clifton, Mr. C., 77 Climate of the Nile Valley, 18, 27, 102, 214-220 Congo forest, 29 Conversion tables for pics and metres, 211, 212 Corvée, 70 Cotton, 82, 88, 102, 103, 104 Course of the Nile, 12 Cretaceous, 111 Cromer, Lord, 100 Cultivated area of Egypt, 73 D