Gaash river, 21, 45, 46, 101, 103 Gage’s channel, 34 Garak depression, 81 Garstin, Sir W. E., 5, 11, 12, 26, 29, 32, 41, 75, 82, 83, 85, 88, 89, 91, 92, 99, 101 Gauges, 48, 50, 51, 52, 53, 117, 153 ---- Assuân, 194-201, 209 ---- Assuân Reservoir, 202 ---- Berber, 190-193 ---- Cairo, 203-206 ---- Damietta branch, 208 ---- Duem, 178 ---- Dulaib Hilla, 176 ---- Gondokoro, 169-172 ---- Jinja, 166 ---- Khartoum, 183-187 ---- Khasm el Girba, 188-189 ---- Mongalla 173-174 ---- Nasser, 175 ---- Rosetta branch, 207 ---- Tewfikia, 177 ---- Wad Medani, 179-182 ---- Wadelai, 168 Gazelle river, 13, 15, 16, 17, 18, 19, 23, 35, 40, 56, 83, 129, 133 ---- ---- discharges, 139, 140 ---- ---- tributaries, 36 Gebel, Bahr-el-, 12 Gebelain, 42 Geology, 21, 110 Gessi Pasha, 40 Gezireh, 100, 102, 103 Ghaba Shambe, 32, 37, 41 Gold, 114 Gondokoro, 23, 32, 56, 90, 91, 119, 122, 126, 127, 139, 140, 141 ---- gauges, 169-172 ---- discharge table, 144 Gordon, 40 Gosrejeb, 45 Green water, 61 Granites, 21, 111 H Hansard, Mr., 5 Herodotus, 78, 80 Hewat, Mr. Marshal, 77 Hillet Nuer, 33, 34, 40, 83, 84 Hughes, Mr. Frank, 64, 100 I Ibrahim Effendi Fehmy, 105 Igneous rocks, 111 Infiltration, 53, 59, 60, 81, 84, 90 Introduction, 11 Irrigation, 65, 66, 68, 69, 93, 96, 97, 99, 102, 105, 106, 108, 109, 110, 159-163. Ismail Pasha Ayub, 40 J Jinja gauge, 167 K Kafr Zayat, 54 Kagera river, 12, 26, 28 Kalabsha, 74 Kamlin, 21, 24, 46 Kankar, 21 Karanain, 54 Kassala, 46 Kharga oasis, 109 Khartoum 13, 14, 15, 20, 21, 24, 43, 44, 46, 57, 60, 100, 135-142, 216 ---- distances to and from, 125, 126, 128 ---- discharge table, 148 ---- gauges, 183-187 Khasm el Girba, 45, 138 ---- discharge table, 149 ----- gauges 188, 189 Kit river, 32 Kom Ombos, 22, 113 Kordofan, 17 Kushesha, 78 L Lado, 40 Lepsius, 47 Letheby, 61, 62 Linant Pasha, 42, 55 Limestone, 22, 114 ---- Nodular, 21 Lolle, 35, 84 Lombardini, Elia, 5, 11, 12, 38, 60 Luxor, 22 Lyons, Capt. H.G., 5, 11, 18, 21, 26, 27, 33, 44, 84 M Mackenzie, Dr., 62 Manures, 63, 69 Marno, Signor, 40, 84 Martyr, Col., 41 Mean low water levels, 94, 158 Megahid channel, 35 Mehemet Ali, Viceroy, 38, 54, 68, 73, 74 Menes, 79 Meteorological data, 214-220 Miocene, 113 Mississippi river, 33 Mœris Lake, 66, 74, 76, 78, 81 Mongalla, 132 ---- discharge table, 145 ---- gauges, 173,174 N Napoleon, 48 Nasser, 37 -- gauge, 175 Navigation, 14, 28, 32, 44 Nero, 38 Nile, The, 11, 12, 15, 16, 18, 21, 46, 47, 49, 56, 58-61, 67, 93, 99, 164-166 ---- discharge tables, 150,158 ---- distances along, 124, 125 ---- gauges, 190-206 ---- slopes, 120 ---- velocities, 121-122 Nitrates, 22, 69, 115 No, Lake, 14, 34, 35, 82, 83, 84 Nomenclature, 12 O Oases, 107 Omdurman, 43 P