HUGHES : INGLEBOROUGH. 
277 
There is also a well-marked band full of small yellowish con- 
cretions formed round organisms which I will refer to as the 
" almond " bed. 
It is probable that there are beds of shale concealed under 
the superficial deposits between these Lower Black Limestones 
(/ and g, Fig. 4), and those (viz., h and c) which crop out in the 
bed of the stream above where the wall {d of Fig. 4) crosses it. 
These Upper Limestones {h and c of Fig. 4) are very different 
in character and contain a different fauna. The rock, especially 
Fig. 4. 
DIAGRAM OF SECTION SEEN IN GILL BELOW FARRER's SHOOTING BOX. 
a. Shale seen in bank above road by stream. 
Latissima f ^- ^'^^'^ ^^^^^^^^^ tl"" 
-Zrtvp \ Black Marble in thicker beds over which there is a small waterfall 
I (Plate XXXV., Fig. 1). 
f d. Wall crossing stream. 
t p. Boulder Clay with scratched stones. 
There is probably shale below d and e. 
Lower f f. Black Bituminous Limestone in thick beds causing small 
GiGANTEA ^ waterfalls. 
Zone. <j. Black shale and Nodular Limestone with Proiucta gigantea. 
Shale seen below the Lower Gigantea Zone in adjoining sections. 
TTrilobite ^ 
;- h. Black Limestone in irregular slabs seen along the wall to the south. 
Zone. j & o 
1. Grey Massive Limestone. 
the highest beds seen (6), consists of fine, thin-bedded, black 
limestone, which takes a good polish in the bed of the stream 
where the sand from the beds above is carried over it. It 
weathers to a small depth into a white or dun surface, on and 
from which the fossils, having a different texture, stand out in 
dark relief. In this occurs a strongly involuted form of Producta 
(see Plate XXXVL, Figs. 1 and 2), with a very long hinge line 
and uniform, sharply defined, relatively broad ribs. This is Pro- 
ducta latissima described by Phillips,* and marks a different 
* Geology of Yorkshire, PI. VITI., Fig. 1. 
