— 154 — 
CRETACEOUS STRATA. 
2. Esna Shales with nitrates. The few fossils found are mainly corals, similar 
to those noted in n° /j below. 
3. Wliite Limestone or Chalk with Ostrea vesicuhris Lam., Echinocorys 
Fakhryi, Fourtau, and sponges ( Féïi/n- 
Thickness i o i • \ 
"'"' ''^ ' cullies and Schizorhabdus). 
* ? ..i-^^^-t!!' A ^- Shales underlying the Limestone 
T "" 'E=:3:E=Ê-3=^ ^'^'^ equivalent to the Ash-Grey Paper 
i =B>-z-E-E-E=^s. Shales of the Oases. These yielded a rich 
2 s -z-?^^-r?^?-?:^N. fauna of small shells and corals at Kela- 
;' i-z->i-i-i-z->i-iElE?\ bia, near Esna (Hume, /oc. nV., p. 127). 
; z^zE-^z^z^iE-z^^z-z-z-z-^ 5- ^lecfew Limestones, marly lime- 
.3 o I I I I I I I J I I 1 stones witli Pecten Mayer-Eymari , Newton 
t"""" ' AttJi^^v 'li^:' i.'.w, :. a [P. farafrensis , Zittel). 
3^ T7^ ftw^ ^^y7.i/-v -\ ^* ^^P^^^^'^P^^ ^^''-^1 Scapliiles 
allied to ^c. Kambysis, Zittel. 
^ 7. Oyster Beds and Phosphalic Series. 
Fia. 1. — Section sliowin/î Roolofjical succession r\ . r . • 11 /-i 
on east hank of Nile opposite Esna. ^y^^ers of typically Gampanian age 
(^Ostrea Forgemolli, Goq. and 0. Villei , 
GoQ.) and fish- teeth i^Olodus biauriculalus , Zittel). 
8. Shales above the Nubian Sandstone Series. 
Tiic upper Gretaceous age of the beds from n°' 3 to 8 is now fully establish- 
ed, and the present writer also includes n° 2 here on the ground of the re- 
semblance of its fossils to those in n" /i. Mr. Beadnell, as a result of his studies 
in the Oases, regards them as transitional to the Eocene. 
THE EXTENSION OF NITRATE SHALES 
ON THE RIGHT DANK OF THE NILE 
The shales (alternating with sandstones) which are developed between 
Mahamid and Sibaia are worked to a slight extent Between Sibaia and Kelabia 
the lower division of the Nitrate Shales is principally exploited, while the 
As it is now some years since the detailed examination was undertaken, some of the statements here 
made may require minor modification, hut in the main they probahly hold good for the present time. 
