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but I am now inclined to think that there are few Geological 
Sections in the Cotteswolds that will not repay the observer 
for the time he may spend in their exploration, and the quarries 
at Tiltup’s End are examples in point. 
Recently, in company with two of our colleagues, Mr Cuas. 
Puayne and Mr Aurrep Smits, of Nailsworth, I went over the 
ground between Nailsworth and the top of Wotton hill. Our 
object was chiefly to see if there was sufficient material for a 
programme of one of the Summer meetings of the Club. The 
result of our examination, so far as it relates to the Geology of 
that part of the Cotteswolds, is contained in the following 
notes, which I have put together, thinking that they might be 
interesting to the Geologists of the Club. . 
The area which I have mentioned is shown on the map of 
the Geological Survey as occupied by the Forest Marble and 
Great Oolite. In the neighbourhood west of Kingscote the 
Forest Marble occupies the high ground, but in that locality the 
two formations resemble each other so closely on the surface 
that it is not easy to trace the boundary lines without the aid 
of the Map. The White Limestone of the Great Oolite in that 
part of the area nearer to Nailsworth is more distinctive. These 
Limestone beds, which constitute the upper part of the Great 
Oolite, have their greatest development in the neighbourhood 
of Sapperton Tunnel, where they have a thickness of twenty 
feet, and they are probably very little thinner as they approach 
Minchinhampton. Dr Wricur describes them briefly in his 
paper on “The Correlation of the Jurassic Rocks of the Céte 
D’or with those of the Cotteswolds;” he mentions them as 
occurring at Minchinhampton, Cowcombe, and Sapperton, but 
does not allude to their extension south-westward beyond 
Minchinhampton. 
Dr Lycerrr gives a full description of the Limestone, and 
speaks of it as passing through the village of Avening and the 
Minchinhampton district, but he does not appear to have 
traced it in the direction of Wotton-under-Edge. This has 
now been done, and it is found to gradually thin out in that 
direction, and to disappear near Kingscote. 
oe ee ee ee a a 
