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STRATA AT POUNCEFORD. 
generally selected, for the purpose of extracting 
the stone, as the labour of digging through 
the beds of sand and soft sandstone is thereby 
avoided. 
Near Swife’s farm, in a deep valley, a branch of 
that of Pounceford, an interesting section was ex- 
posed in 1830, at the time of my visit, in company 
with my friend Mr. Lyell. 
SECTION EXPOSED IN A QUARRY AT SVVIFE’S FARM NEAR 
POUNCEFORD. 
a. Clay, shale, and sandstone. 
b. Calciferous grit. 
c. Shale and clay highly inclined. 
d. Beds of limestone like that of Ashburnham. 
e. Shale and clay. 
E. Openings of shafts. 
1. Uppermost bed (beneath a superficial cover- 
ing of loam) soft ferruginous sandstone. 
2. Laminated clay and shale, with cyclades. 
3. Clay and shale, with shells in immense quan- 
tities, chiefly cyclades ; some of the layers are 
wholly composed of testaceous remains, in the 
state of a white friable mass, so perfectly resem- 
bling the shelly clay beds of certain parts of the 
