HUDLESTON: GEOLOGY OF PALESTINE. 
185 
3. Explanation of the, Map and Geological Column . — “ Geological 
Sketch Map of Sinai and Palestine.” (Plate YI). 
We must now turn our attention to the geology of the district, 
and by way of preface, I will give a brief geological demonstration 
of the map and vertical column (Fig. 2). 
Fig. 2. 
J 
A. — (a) Coast deposits of probably qua- 
ternary a^e ; (a/) Jordan valley 
deposits of two kinds ; (b) ? Miocene. 
B . — Nummulitic and Cretaceous Lime- 
stones and Marls. 
C . — The upper portion denotes the Nubian 
Sandstone, which is made to include 
the G/andariv s-\imestone and Jurassic 
rocks of the Lebanon (e of the map 
and vertical section) ; as also the 
limestone with carboniferous fossils 
of the Wady Nasb in the Sinai tic 
peninsula (s of the vertical section). 
The lower portion includes the Schists, 
Gneiss, and Granite. 
The use of a vertical column in geology is very considerable, 
as it enables people to see at a glance what they have to expect. 
At the same time it must be understood that no such section as is 
exhibited by this generalized column is ever seen in one place. In 
the map the crystalline rocks are all placed under the symbol /, and 
