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FLINT IMPLEMENTS FROM ANCIENT EGYPT. 101 
Arabian, and on the west into the Libyan deserts. Above Esna the lime- 
stones disappear, and give place to the far southward-extending Jurassic 
(Nubian) sandstones which repose on the igneous metamorphic rocks con- 
stituting the core of the African continent. As the flint nodules are found 
only in the nummulitic limestone, just as they are in the chalk of England, 
the implementiferous districts of the Nile Valley naturally lie between Cairo 
and Esna. 
The quarries or pits, from which the main collection I am now describing 
came, are situated in the Wady el Sheikh. This Nile tributary (now, of course, 
nearly always dry) opens from the south-east into the mud-plain of the 

View oF WORKINGS IN THE LEDGE OF A CLIFF NEAR Camp VI., 1896. 
(From a Photograph by Mr. Seton-Karr.) 
river opposite El Fent, which is situated half-way between the stations of 
Feshn and Maghagha on the railway from Cairo to Assiout. The Wady 
Sojoor, in which was situated the mine found in 1896, les roughly about 
“10 miles east of Maghagha, and about the same distance south of the mines 
opposite El Fent.” 
In the winters of 1896 and 1897 Mr. Seton-Karr camped at fifteen places 
in the Wady el Sheikh, as he has laid down in his sketch survey, reproduced 
on a reduced scale on the map facing page 77, where the sites of the mines 
which he explored from these camps are also indicated. It will be seen 
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