[Illustration: BAHARIA OASIS PLATE I.] [Illustration: SKETCH MAP OF EGYPT Showing the Positions of the WESTERN OASES PLATE II.] [Illustration: PLATE III. BAHARIA OASIS MAP OF THE VILLAGES AND PRINCIPAL SOURCES OF WATER IN THE NORTHERN PART OF THE OASIS.] [Illustration: PLATE IV. BAHARIA OASIS SECTION THROUGH WESTERN ESCARPMENT 11 KILOM. N. OF SOUTH END OF DEPRESSION] [Illustration: PLATE V. BAHARIA OASIS DIAGRAMMATIC SECTION FROM HILL 15 KILOMETRES NORTH-EAST OF AIN EL HAISS TO EOCENE-CRETACEOUS JUNCTION ON DESERT TO WEST] [Illustration: PLATE VI. BAHARIA OASIS Section from MANDISHA through JEBEL MAYESRA and Conical Hill to WESTERN PLATEAU.] [Illustration: PLATE VII. BAHARIA OASIS MAP OF THE SYNCLINAL FOLD FROM JEBEL HEFHUF TO ITS TERMINATION] [Illustration: BAHARIA OASIS. SKETCH OF GEOLOGICAL SECTIONS OF EAST SCARP. PLATE VIII.] Transcriber's note: Pg. 8 (footnotes 1 and 3) Changed: _Méróe_ to: _Méroé_ Pg. 19 (footnote 20) Changed: _Gesellchaft für Erdkunde_ to: _Gesellschaft_ Pg. 21 Changed: Lower Mokattam leds to: beds Pg. 33 (footnote 27) Changed: _Physiche geographie_ to: _Physische_ Pg. 35 Changed: about 150 kilometres to: 350 Pg. 44 Changed: camels and raders to: traders Pg. 51 Changed: _Neolobolites_ to: _Neolobites_ Pg. 52 Changed: _Neobolites_ to: _Neolobites_ Pg. 58 Changed: _Textularia? granien_ to: _gramen_ Pg. 77 Changed: ruin kown as to: known Pg. 78 Changed: undergroud aqueduct to: underground Minor changes in punctuation have been done silently.