E. FE. L. Dixon—Titterstone Clee Hills. 459 
8. The ‘Millstone Grit’, which consists largely of sandstones and 
conglomerates, is undoubtedly conformable with the Carboniferous 
Limestone Series, and, as regards its base, is probably, from what has 
just been said, of Syringothyris age, and therefore much older than 
the Millstone Grit proper. Unfortunately its marine fossils, found at_ 
but one horizon, are of no zonal value, but its plants, from various 
levels, connect it, according to Dr. Kidston, with Lower Carboniferous 
rocks, not with the Millstone Grit proper. The conclusion as to the 
age of the lower part may therefore extend to the whole, and it is 
suggested that a non-committal place-name be applied to this formation 
instead of ‘ Millstone Grit’. 
4. The Coal-measures include ‘ sweet’, i.e. non-sulphurous, coals at 
several'horizons from the base upward, and have yielded, besides a fairly 
rich flora, a small marine fauna at one or two horizons. ‘The most 
important point, however, is the fact that they are not conformable 
with the ‘Millstone Grit’. Their relationship has been revealed in 
a quarry, where their basal bed, a pebbly sandstone, rests at a low 
inclination and with marked discordance on evenly-dipping beds of 
Grit ; and it affords the only satisfactory explanation of a transgression 
of the Measures across the outcrops of the Grits, which is brought 
out by 6 inch mapping. 
As the ‘ Millstone Grit’ is in part much older than the rocks of that 
name which underlie Coal-measures elsewhere, it becomes of interest 
to inquire whether the break between it and the Coal-measures on Clee 
Hill corresponds merely to the period of the Millstone Grit proper, 
or whether it includes some part of Coal-measure time also. That is, 
what is the age of the base of the Coal-measures on Clee Hill? 
A feature of these measures is the presence in them of red clays and 
green sandstones of ‘espley’ type at intervals from a few feet above 
the base upward. According to Dr. Walcot Gibson rocks of these 
characters are not known in Coal-measures of other parts of England 
and Wales from any horizon lower than the Etruria Marls or a short 
distance below. Stratigraphical evidence also suggests that the Coal- 
measures of Clee Hill commence at this level. For there is no doubt, 
as has been pointed out by Mr. Daniel Jones, but that the Clee Hill 
measures are of the same horizon as the ‘sweet coal series’ of the 
adjacent Forest of Wyre Coal-field. There, in the Kinlet district, the 
junction of this series with the overlying sandstones which yield 
the ‘sulphur coals’ was found, in the course of an extension of the 
work to that neighbourhood, to be 2 conformable one ; and therefore, 
as the sandstones have been recognized by Dr. Gibson and Mr. T. C. 
Cantrill as representing the Newcastle-under-Lyme Series, we may 
couclude that the ‘sweet coal series’ which, like the Clee Hill 
measures, include some red clays and ‘espley’-like sandstones, 
corresponds to part of the Etruria Marls. It may be added that the 
most recent Coal-measures on Clee Hill are sandstones resembling the 
Neweastle Series of the Forest of Wyre, but too thin (they form an 
outlier of a few acres extent) and poorly exposed to yield further 
evidence of their age and relationships. 
Against the conclusion that the Clee Hill measures commence with 
a representative of the Etruria Marls it may be urged that the latter 
