are explained, p. 51. (/) in 
this section represents the 
upper part of the Bala Series, 
above (/\) the Bala or Coniston 
Limestone ; (e) indicates the 
observed outcrop or inferred 
position of the conglomerate 
or calcareous rock which forms 
the base of the Silurian series. 
The highest bed of (/) in the 
line of the section is probably 
to be referred to the Ashgill 
Shale, the greater part of 
v.'hich is nipped out by the 
faults (see above, p. 51). On 
this lies the conglomerate (e), 
the basement bed of the 
Silurian, which is succeeded 
by [d) black shale, from which 
a few graptolites have been 
procured, one of which has 
been identified by Miss Elles 
as M. crenularis Lapw\ Appa- 
rently a little above this there 
is the Spengill Limestone [d') 
described above, p. 50, and 
then more black shale {d) which 
passes up into the Pale Slates 
(c), and these in their turn into 
the Lowest Flags of Aust\Wck 
with subordinate grits (6). In 
the lower flags Monograptus 
'priodon Bronn. and M. vomer- 
inus Xich. occur, while in 
the higher flags, which are 
more sparingly intercalated in 
the upper part of the Aust- 
wick Flags and Grits (A, c, 2), 
