Qasr el Sagha—9, 31-32, 43, 49, 52, 56-58, 60-61. Qasr el Sagha Series—27, 32-33, 35, 38, 41, 44-57, 64-66, 75, 77. Qatrani, Jebel El—28, 55, 61, 75. Qatrani beds—34, 53-70. _Qerunia_—38. _Qerunia cornuta_—35, 45-46, 48, 51-52. Quartz pebbles—20, 50, 56, 62-63, 73, 75. Quartz sand—55. Quartzite—62, 73-75. R Radiation of Mammalia from Africa—69. Railway to Fayûm—40. Raised beaches—34, 41. Ratite bird—87. Ravine Beds—23, 25, 29-30, 35, 37-42, 46, 77. Ravines—12, 19, 29, 37, 39-40. Rayan, Jebel—36-37. Rayan, Geology of Wadi—22-23. Rayan, Little—22. Rayan Series—24, 25, 30, 33, 35-39, 41. Rayan, Wadi—9, 11, 14-24, 27-28, 31, 85, 87-89. Rays—70. Recent Beds—34, 81-85. Reclamation of Fayûm lake—82-84. Reconnection of Nile Valley and Fayûm—80. Reeds—20. Regulator of floods, Fayûm as—82. Reinach, Von—59, 88. Reptiles, Fossil—70. Reservoir at Assuan—88. Reservoir proposed in Wadi Rayan—16-19. Retreat of Eocene sea—54, 55, 66. _Rhinoceros bicornis_—69. Ridge separating Nile Valley and Fayûm—25-26, 71, 73-74, 79-80. Ridge separating Rayan and Gharaq—23. _Rimella rimosa_—35, 51. Ripple-marked sandstone—51. Rise of Nile bed—80. River, Ancient—27, 52-55, 66-67, 79. River-currents—65, 71, 78. River-sand—55. Roads in desert—27. Rocks forming Libyan Desert—15. Roda—13, 75, 80. Rodents, Flying—68-69. Rohlfs’ Expedition—9, 63. Rolled fossils—73. _Rostellaria_—37. Round-topped hill-ranges—75. Rubiat—39-42. Ruins—20-22, 48-50, 52. Ruminants, Even-toed—68-69. Rushes—20. S _Saghatherium_—10. _Saghatherium antiquum_—34, 59, 70. _Saghatherium magnum_—34, 70. _Saghatherium minus_—34, 59, 70. Salines—20. Salinity of lake—14. Salinity of water in Wadi Rayan—24. Salt—18, 36, 77, 79. Salt in Wadis Rayan & Muêla—19, 20, 88. Samos, Island of—69. Sands—15, 18, 21, 29, 33-34, 40, 42, 47, 50, 53, 55-59, 61-62, 71, 74-76, 80. Sand accumulations, Wind-blown—12, 20-21, 32, 34, 73, 84-85. Sand, &c., deposited in Birket el Qurûn—13, 80, 84. Sandberger Hills—62. Sandblast action—73. Sand-rock—44, 50-51, 56-60, 62, 74. Sands, Variegated—34, 53, 57, 59. Sandstones—15, 28, 32-36, 38-39, 42-63, 72, 74-77. Sandstone, Concretionary—35, 38. Sandstone-grit—56, 58, 62-63. Sandstones, Mottled—62. Sandstones, Variegated—76. Sandy clays—12, 18, 36-37, 42, 44, 46, 50-52, 56-59, 62. Sandy conglomerate—18. Sandy limestones—25, 35-36, 38-39, 42, 49-52. Sandy marl—37, 42, 62. Sandy shale—42. Saqâra, Pyramid of—28. Saws, Flint—61. Scalenohedra of calcite—51. _Schizaster_—36. _Schizaster_ aff. _africanus_—52. Schweinfurth, Dr.—9, 14, 19, 24, 34-37, 43-44, 49, 64, 71-72, 77-80, 88. Schweinfurth’s Temple—49. Scoring due to blown sand—85. Scott Moncrieff, Sir C.—88.