MAP SHOWING PRINCIPAL BONE-BEARING LOCALITIES _Survey Dept. Cairo._] [Illustration: Plate XIX. SECTION FROM THE BIRKET EL QURÛN THROUGH DIMÊ AND QASR EL SAGHA TO THE SUMMIT OF JEBEL EL QATRANI.] [Illustration: Plate XX. SECTION FROM WADI RAYAN TO THE SUMMIT OF THE ESCARPMENT NORTH OF GAR EL GEHANNEM.] [Illustration: Plate XXI. SECTION OF THE DESERT RIDGE SEPARATING THE NILE VALLEY AND THE FAYÛM.] [Illustration: Plate XXII. SECTION FROM SIDMANT EL JEBEL IN THE NILE VALLEY THROUGH MEDINET EL FAYÛM TO THE SUMMIT OF JEBEL EL QATRANI, NEAR WIDAN EL FARAS.] [Illustration: Plate XXIII. MIDDLE EOCENE ESCARPMENT NEAR QASR EL SAGHA.] [Illustration: Plate XXIV. FROM GARAT EL ESH TO THE SUMMIT OF JEBEL EL QATRANI.] Transcriber's note: pg 4 Changed: "Homotoxial with quarried" to: "Homotaxial" pg 6 Changed: "M.—_Gyseous Deposits_" to: "_Gypseous_" pg 30 Absent references to footnotes 30 and 31 added after "an accompanying map" and "plateau north of the lake." respectively. pg 31, footnote 32 Changed: "Bd. XXX I 1902" to: "Bd. XXXII 1902" pg 34, footnote 34 Changed: "III, Das Miocân,”" to: "III, “Das Miocän,”" pg 58 Changed: "_Potamides tristiatus_" to: "_tristriatus_" pg 66, footnote 82 Some missing text has been indicated as [Blank]. pg 69, footnote 84 Changed: "für Saügetiere" to: "Säugetiere" pg 79 Changed: "matter or considerable doubt" to: "of" pg 80 Changed: "with little resistence" to: "resistance" pg 87 Changed: "_Eocene beds of the Fayûm, Egypi_" to: "_Egypt_" pg 88 Changed: "_Versteinerungen der tertiāren_" to: "tertiären" pg 88 Changed: "_für Saugetiere_" to: "_Säugetiere_" pg 88 Changed: "_der Libyschen Wūste_" to: "_Wüste_" pg 89 Changed: "Nacula Mœridis" to: "Nucula" pg 91 Changed: "_Arca tethyis_—52-90." to: "52, 90." pg 97 Changed: "Muêla, Wadi— [. . .] 21-21," to: "20-21," pg 97 Changed: "_Mytilus affinus_" to: "_affinis_" pg 98 Changed: "Perrenial irrigation" to: "Perennial" pg 98 Changed: "_Plonorbis subangulata_" to: "_Planorbis_" pg 98 Changed: "_Pectunculus pseudopulvinatus_—" to: "_Pectunculus pseudopulvinatus_—35." pg 99 Changed: "Rohlfs’ Expedition—9-63." to: "9, 63." pg 100 Changed: "Thickness of beds in section—37-29" to: "37-39" Minor changes in punctuation have been done silently. Typographical errors changing æ for œ and vice versa have been fixed silently. Placenames commonly spelled with diacritics (Fayûm, Qurûn, Lahûn, etc.) were also accented elsewhere except illustration captions, headers and titles of cited works. Other spelling inconsistencies have been left unchanged.