Sculpturing of sandstone—85. _Scutella_ beds—64. Second Cataract—81. Sections, Geological—36-42, 44-47, 50-52, 56, 58-62. Sediment deposited in Fayûm—26, 54. Sêla—9, 26, 39-40, 73. Septaria—46. _Serpula_—46. Sersena—25, 42, 75. Shales—36, 42, 48. Shaly Clays—44, 47, 62, 77. Shaly marl—39-41, 44. Sharks—39. Sharks’ teeth—46, 51. Sheep remains—80. Shell-borings—72. Shell-impressions—39-40, 42, 44, 50. Shelly limestone—38-39, 46, 51-52. Shelly sands—36. Shelly sandstone—46, 51. Sherwin, R. S.—78. Shore-line, Ancient—77. Shore-line, Movements of—65. Shrinkage of Birket el Qurûn—13. Sidmant el Jebel—17, 34, 71, 77. Siliceous bands, Horns of Birket el Qurûn due to—41. Siliceous beds capping hills—61. Siliceous limestone—37, 41. Silicified grits—27, 62, 67. Silicified sandstones—32, 57. Silicified trees—27, 34, 51, 53, 55-59, 61, 63, 65, 73-75. Silicified trees, Size of—53, 63. Silsila—81. Siluroid fish—35, 51, 70, 80. Sirenia—51. Sites, Excavated—84. Skeleton-carrying currents—53. Soil, Character of—11-12, 88. Soil survey—9. _Solarium_—51. _Solarium_ aff. _bistriatum_—51. South Africa as centre of evolution—69. South America, Migrations to—69. _Spatha_—53, 58, 60, 81. _Spatha dahomeyensis_—60. _Spatha Droueti_—60. _Spondylus ægyptiacus_—52, 89. _Spondylus perhorridus_—89. _Spondylus Ruaulti_—89. Springs in Wadi Muêla—20. Springs of Wadi Rayan—22. Stem-weathering in sandstone—56. Step-faults—31. _Stereogenys Cromeri_—35, 51, 70. _Stereogenys libyca_—70. _Stereogenys podocnemioides_—35, 70. Stock-work—50. Stone Age, Neolithic—82. Strabo—13, 82. Strata, Classification of—34. Strike faults—32. Stromer von Reichenbach, E.—44, 59, 69, 88. Strontium sulphate pseudomorphs—48. Subaerial denudation—39. Sub-fossil fauna of Fayûm—81. Successive faunal invasions, Theory of—68. Sulphate of lime—78. Sulphate of strontium pseudomorphs—48. Survey collections—59. Surveying operations—9. Surveying by Colonel Western—17. T Table-land of cultivated area—11. Tafla beds—39. Tamarisk growth—22, 25, 72, 82. Tamia—12-13, 15, 25, 27-28, 31, 40, 42, 49-50, 55-56, 72, 75. Tamia lake—40. Tectonics—16, 29-32. _Tellina_—40, 42, 51. _Tellina pellucida_—43. _Tellina scalaroides_—35. _Tellina tenuistriata_—35, 39. Temperature changes in desert—73. Temperature effects on pebbles—56. Temperature of springs in Wadi Rayan—22. Temple of Qasr el Sagha—49, 56. _Terebellum sopitum_—36. _Teredo_—39, 47. _Testudo Ammon_—10, 34, 59, 70. _Thallassochelys libyca_—35, 70. Theadelphia—84. Thickness of beds in section—37-29, 42, 45-46, 49-52, 56-60, 65, 76-77. Thickness of sediments in Fayûm—15. Thinning of Fluvio-marine series—55. _Tomistoma_—70.