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caused by the calcareous fossils in the joints of the 
bedding being dissolved out by the action of the weather. 
The road from Mortimer’s Cross to Richard’s Castle 
runs very nearly in the line of the junction of the Old 
Red sandstone and Upper Silurian ; in several places 
sections of rock are exposed. 
Near the Spouthouse the same micaceous beds are 
to be seen resting on the Downton sandstone that are 
exposed near to Forge Bridge ; but all fossils excepting 
carbonaceous markings are very scarce there. 
At Richard’s Castle some fine sections of Downton 
sandstone are exposed, consisting of the lower beds of 
the formation; and they may be traced downwards into 
the underlying rock, which is well exhibited all up the 
main road through the village. 
The Downton sandstone (which is probably composed 
of the debris of the Carodoc sandstone) I would strongly 
recommend to the notice of geologists, as it has had but 
little examination. Most of the Silurian forms of life 
will be observed to have died out, and given place to 
others more nearly allied to the Old Red sandstone 
species. 
Ride No, III. 
This ride is to Titterstone Clee Hill, from the summit 
of which is a most extensive and magnificent view. 
The sides of the hill are covered with large masses of 
loose basaltic rock that have rolled down from the top. 
Its columnar structure may be well seen near to the 
Giant’s Chair, and at the terminus of the Clee Hill 
Railway, but at the latter place it is being rapidly broke 
up and carried away for road metal, for which purpose 
it makes one of the very best materials. 
At the top of the Batch gutter several thin seams of 
coal are exposed, and there I have collected some very 
