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building Freestone. Here Mr. Wrircneni pointed out the 
difference between the Oolite Marl, as shewn in the section, 
and the corresponding bed on the Stroud side of the valley, 
which is seen here in a concretionary state, while at Stroud 
Hill it is disintegrated and Sandy; here the Terebratula fimbria 
is scarce, at Stroud Hill it is abundant, and the bed is also 
much thinner at Rodborough than at Stroud. 
The Upper Freestones were passed over on the way to the large 
quarry near the Fort, on reaching which a halt took place while 
Mr. Wrrcnett called attention to the succession of Ragstone 
beds known as Gryphite, Trigonia, and Clypeus Grits, the latter 
being in the condition of rubble. The Gryphite Grit, which 
at Stroud Hill is from ten to twelve feet thick, is here reduced 
to two feet, but fossils are abundant, and the softer condition 
of the rock makes their collection a much easier task than in 
other localities. In the Clypeus Grits, Mr. Wrreneti called 
attention to a fossiliferous zone, which he had recently dis- 
covered, but to get at the bed it was necessary to move into a 
neighbouring disused quarry, where several of the characteristic 
fossils were collected. 
The next point of interest was the coral beds between the 
Trigonia and Clypeus Grits, at a short distance fron the disused 
quarries. It was found to be broken up; the debris was about 
three feet thick. Mr. Wrrcenett here called attention to the 
circumstance that the beds immediately overlying the coral 
bed are comparatively unfossiliferous, and that a considerable 
change must have taken place in the fauna of the Oolitic sea at 
the close of the coral period. 
A walk over Rodborough Hill to Minchinhampton Common 
brought the party to the section of the Clypeus Grit below 
the Bear Inn, where the lithological character of the beds is 
well shewn. The section having been examined, the walk to 
Minchinhampton Common was resumed, the members separating 
into two divisions, one of which proceeded to the quarries on 
the Common, the false bedding of the section attracting the 
particular attention of those Geologists who saw it for the first 
time, the shelly beds also giving full employment to those who 
