Plate XXI.
SECTION OF THE DESERT RIDGE SEPARATING THE NILE VALLEY AND THE FAYÛM.
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.
Plate XXIII.
MIDDLE EOCENE ESCARPMENT NEAR QASR EL SAGHA.
