366 
HUGHES : INGLEBOROUGH. 
northern limb only of the anticlinal, close under the earthy bank 
on the north side of the stream. As has been pointed out above, 
one's attention is ca-ught by the conspicuous conglomerate at 
the base of tlie Carboniferous, which, owing to the same circum- 
stances that cause the outburst of the springs here, creeps out 
on to the lower ground over the Bala shales, so that some 
might give up the search for any other basement bed than 
tliat obviously belonging to the Carboniferous, for the base- 
ment bed of tlie Silurian is very thin and obscure. It resembles 
DIAGKAM ILLUSTRATING THE MODE OF OCCURRENCE OF THE STRATA 
AT AUSTWICK BECK HEAD. 
a. Mountain Limestone. 
Basement bed of the Mountain Limestone. 
c. Silurian. 
d. Basement bed of Sihirian. 
e. Bala Shale and Limestone. 
the bed seen in the stream near Dam House Bridge rather 
than the coarse conglomerate seen below South-thwaite. Xo 
fossils have been recorded from it in this vSection, nor from 
the beds associated with it. It is shown in the photograph 
Plate L.,* where the liammer is laid across its outcrop. The 
white beds above are the Mountain Limestone, and the 
Bala Beds are seen in the stream below the hammer. 
The basement bed of the Silurian is here made up chiefly 
of the soft schists of the Green Slate Series. From the 
* Proc. Yorks. Geol. and PoJytec. Sor?., Vol. xiv.. Part III. 
Fig. o. 
