Yol. 68.] PALEONTOLOGY OF THE WARWICKSHIRE COALPIELD. 605 



pebbles. The parent-rock must not, therefore, be sought in the 

 north, but rather to the south or west of the district. 



At Corley Eock, 6 miles north-west of Coventrj-, an abrupt escarp- 

 ment facing north-eastwards is formed by the hard red sandstones 

 with thin beds of conglomerate in a marly matrix, which dip south- 

 westwards. The conglomerates at this horizon appear to be con- 

 tinuous for a distance cf about 10 miles. 



From Corley the bed strikes south-eastwards to Radford, where it 

 is seen in the Radford road ; in the railwaj-cutting under the 

 road ; and in St. Joseph's Avenue, where it makes a distinct 

 feature. Farther south the bed crosses the town of Coventry to 

 AVhitley Common, beyond which it disappears, being overlapped by 

 the Lower Keuper Sandstone. 



At Corley Eock the direction of strike changes from north- 

 west to almost due west. The bed is seen in the sand-pits at 

 Chapel Green and near Meriden ; still farther west it is probably 

 cut off by the boundary- fault. 



Isolated patches of conglomerate occur at Exhall, Maxstoke, 

 Arlej, and Fillongiey, and near Polesworth. At Arley two con- 

 glomerates crop out : one is seen in the Eourne Brook at Fillongley 

 Lodge, and the other is well exposed in the railway-cutting at 

 Arley Station. The latter exposure consists of 10 feet of massive 

 false-bedded conglomerate in a red marly matrix which, about 

 50 yards westwards, passes laterally into a pebbly sandstone, and 

 finally into a red marly sandstone devoid of pebbles. This con- 

 glomerate is not, therefore, a continuous bed, but only a lenticular 

 mass which probably thins away in every direction. 



At Hill Farm, Maxstoke, the boundary-fault brings a bed of con- 

 glomerate which dips eastwards at 15° alongside nearly horizontal 

 Upper Keuper Marls ; the course of the fault is a steep escarpment 

 facing west. 



It is necessary to add that, on the present evidence, the relation- 

 ship of the isolated outcrops of coiiglomerate to the main bed 

 at Corley is still uncertain. It is a question whether there is but 

 one horizon of conglomerates, or whether there are two different 

 horizons separated by some hundreds of feet of pebbleless sand- 

 stones and marls. 



In the first case, the isolated patches of conglomerate are 

 simply outliers of the main bed at Corley : and the presence of 

 the conglomerates at a depth of 600 feet in the Whitmore-Park 

 Boring, and of a thin bed 900 feet deep in the Foleshill-Eoad Boring, 

 may be explained either by a strike-fault, or else by a local syncliue 

 striking south-eastwards about a mile north of Coventry. 



In the second case, assuming the presence of two main beds of 

 conglomerate, the Maxstoke, Arley, and Exhall conglomerates 

 suggest an outcrop striking roughly parallel with that of the 

 Coventry-Corley bed. 



Each of these explanations requires the presence of some 

 hundreds of feet of Permian in the neighbourhood of the two 

 boreholes mentioned above. A few yards east of the Foleshill- 

 Eoad Boring, Messrs. Webster's brick-pit shows a good section of the 



