Nile, The, gauges, 190-206 
— slopes, 120 
— velocities, 121-122 
Nitrates, 22, 69, 115 
No, Lake, 14, 34, 35, 82, 83, 84 
Nomenclature, 12 
0 
Oases, 107 
Omdurman, 43 
P 
Papyrus, 31, 32, 42 
Payen, Champion and Gastinel, 63 
Peake, Major, R. A., 41 
Peat, 21 
Percolation, see Infiltration. 
Perennial irrigation, 59, 68, 69, 88. 93 
Phosphates, 22, 115 
Pibor river, 37 
Pics converted to metres, 98, 209, 210 
Plates, List of, 9 
Pliocene, 113 
Porphyry, 114 
Projects, 44, 58, 73, 84 
— Raising Assuan dam, 75 
— Wady Rayan Reservoir, 76 
— Lake Albert Reservoir and river training, 81 
— - Flood protection for Egypt, 85 
— Complete for the Nile, 87 
Sir William Garstin’s projects, 89 
— Conversion of basin to perennial irrigation, 93 
— Development of the Sudan, 100 
Prompt, M., 74 
R 
Rahad river, 17, 21, 44, 101 
Rainfall, 17-21, 27, 30, 41, 43, 45, 56. 59, 103, 213. 
— tables, 214-220 
Raineses, 48, 86 
Red water, 61, 75 
Reservoirs, 30, 73, 75, 76, 77 
Ripon Falls, 12, 27, 28, 127, 139-141. 143, 166 
Roda gauge, 50 
-“gauges, 203-206 
Rohl river, 36 
Rosaires, 13, 14, 44, 128 
Rosetta branch, 14, 15, 33, 53, 60, 61, 85, 86, 87, 
,89, 139, 140 
discharge table, 151 
— - — distances, 123 
gauges, 207 
velocities, 121 
Ross, Col. Justin, 77 
Rudolf, Lake, 16 
Ruenzori, Mountain, 16, 21, 29 
s 
Salaama river, 13, 45 
Sandstone, Nubian, 24, 112, 114 
Sayce, Rev., Professor, 79 
Schweinfurth, Dr., 36, 39, 85 
Scott- Mon crieff, Sir Colin, 3, 74 
Scour and deposit of silt, 44, 92, 95, 99 
Semliki river, 12, 29 
Sennaar, 14, 44 
Semna Cataract, 47 
Sesostris, 66 
Settit river, 13, 45 
Silsila, 21, 74, 112 
Slopes, 14, 47, 48, 49, 53, 120, 157 
Sobat River, 12, 13, 15, 23, 35, 36, 37, 56, 61, 82, 
84, 119, 129, 134, 139-141 
discharge table, 145 
-gauges, 175, 176 
slopes, 120 
velocities, 121 
tributaries, 37 
Soil analysis, 45, 61, 63, 64, 100, 101 
Sparkes, Col., 40 
Speke and Grant, 11 
Strabo, 78 
Storage, see Projects 
Suakin-Khartoum railway, 100 
Subject matter, 7, 8 
Subsoil water, 63, 67 
Sudan, 88, 100, 102, 103, 105, 106 
Sudd region, 13, 16, 33, 34, 35, 37, 38, 39, 41, 
56, 57, 58, 82, 83 
T 
Temperatures, 19, 20, 21, 214-220 
Tewfikieh, 41, 134, 139, 140, 141 
— discharge table, 146 
— gauge, 177 
Thebes, 67 
Tributaries of Lake Albert, 31 
— — the Albert Nile, 31, 32, 34 
Atbara, 45 
— Blue Nile, 44 
Lake Edward, 29 
Gazelle river, 36 
— — - Sobat river, 36 
— Lake Victoria, 28 
Victoria Nile, 29 
Trough of the Nile, cubic contents, 155 
Tsana Lake, 13, 15, 43, 45, 88, 103, 129 
Tumat river, 44 
