340 Dr. W. F. Hume and others— 
by J. M. Barthoux et M. Douvillé (Comptes Rendus Ac. Sciences, 
t. 157, p. 265, 28th July, 1913). 
In this paper it was pointed out that no Jurassic formations were 
previously known in the south-eastern portion of the Mediterranean 
basin between Tunis and North Palestine, and that in Sinai itself 
they are only found in the most northern of the hill ranges, of which 
Gtera (Gedeira), Hameir (Hamaiyir), and Maghara are the principal 
component hills. Here, however, there is a notable development, 
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Fic. 1.—Orographic map of Northern Sinai. 
the lowest strata being characteristic (a) ““ Nubian Sandstone ”’, 
with vegetable remains. They are highly inclined, and their base is 
not seen. These are followed by (6) an alternation of grits and 
marls having an estimated thickness of 80 metres, overlain by 
greyish limestones (about 25 metres thick), with Terebratula fimbria, 
Rhynchonella Edwardsi, and corals of the genera Thamnastrea and 
Montlivaultia. These are the first beds of the Bajocian (Inferior 
Oolite), which are succeeded by limestones becoming yellowish and 
alternating with marls, their dip diminishing little by little. The 
fossils are well preserved, but often broken, especially the ammonites, 
which are somewhat rare, and represented by simple fragments. 
These beds are grouped by the authors under three divisions, (c) 
those of Bajocian age, with Ccloceras Humphriesi, Terebratula 
Phillipsi, T. perovalis, etc. (d) Bathonian (Great Oolite) with 
(Hcotraustes subfuscus, Pholadomya ct. Aubryi, Eudesia cardvum, 
