86 
as the beds are tenacious or friable. The yellow sandy marl 
No. 6 gave an analysis :— 
Ca CO, ae ee bi ee 22 
Sand... ee ee cs aes 34% 
Silicate of Alumina ... ace ae 43 % 
It would be valuable to have a complete analysis of each 
of these beds, before speculating on the changing conditions of 
their deposition. None of the beds in this section contain 
perfect fossils, broken oysters and Rhynchonelle being all one 
obtains. 
The line next runs through a long shallow cutting which 
we have called for convenience the 
WIGGOLD APPROACH CUTTING. 
ft. ins. 
Fissile sandy slate SOc wae Bee eee i oe 0 
Sandy marl re oon oe 6c ae gr .« i Oj = lao 
Shelly slabs resembling roofing tiles of the district re oe (Ohne 
Clay 580 ae ae “no sae Bee 3 5 Pree Ue 
Shelly slabs 200 285 ses se eee ee Ec 1-2 0 
This bears some resemblance to the Burford Road Cutting, 
but it is not so falsely bedded. 
The whole series of cuttings, magnificent as they are, fail 
us in one particular. They nowhere give us a junction section 
of the Forest Marble and the Great Oolite, a desideratum in 
our local exposures. But if these beds of the Wiggold 
Approach section be not faulted, and I see no indications of 
such, they appear to constitute the bottom beds of the Forest 
Marble series; for at a distance of three hundred and fifty 
yards we enter the long Wiggold Cutting, which from its white 
freestones with abundant perfect fossils (Lima and Brachiopoda) 
appears to be in the upper beds of the true Great Oolite. 
The Wiggold Cutting is three-quarters of a mile long, 
cutting through a broad high “down.” It is crossed by three 
bridges, which afford good landmarks in plotting the section, 
and as some notable changes take place in the rocks here 
exposed, it will be well to have separate sections. 
