119 
3. Compact white Oolite a 
4. Soft Marly Oolite, with C. Plotii, C. shentailor is 
5. Unseen, about is ee 
At Swinbrook the Section is described as 15 feet of exceed- 
ingly coarse-grained Oolite, containing Clypeus Plotii, Terebratula 
globata, and Lima gibbosa; and on the north side of the valley 
of the Evenlode the bed is of similar character, and about 10 
feet thick. 
The Pholadomya Grit of Dr. Lycurr is described in the 
following Section at Scar Hill, Nailsworth :— 
ae 
oo ou 
ft. in. 
1. Brown Oolite, partly disintegrated by atmospheric action ... 4 0 
la Sandy Sten a Oolite, abounding with Terebratula 
globata ies : wae ser A ner nk, 
ib. Four beds, the upper anean of eal consisting of brown 
concretionary Rock, with Myacites subelongatus, Gresslya 
abducta, and G. conformis, in the state of casts AB Lelie Gein, 
le. Trigonia Grit 
The rubbly condition of the upper beds was doubtless the 
reason why Dr. Lycrrr did not more fully describe the 
White Oolite, which Professor Hutt mentions as occurring at 
the top of the formation. 
Having observed in the excavations in making a reservoir 
on Stroud Hill, that this White Oolite was a compact bed, I 
was induced to look for it in other places in the district. 
On Rodborough Hill I found it a bed of fine-grained white 
Freestone, five feet thick, broken up into rubble where it forms 
the substratum, but regularly bedded at a greater depth. 
At Rodborough the upper Ragstone series between the 
Fuller’s Earth and the Trigonia Grit is as follows :— 
Section 
No. ft. in. 
7. Compact white fine-grained Oolite, containing Terebratula 
globata, Trigonia costata, Pecten arcuatus, P. demissus, &e. 5 0 
8. Clypeus Grit, containing Terebratula globata in immense 
numbers ... a4 Bo eo 
8a. Clypeus Grit, PS Terebratula pba. hr in pro- 
fusion, Rhynchonella sub-tetrahedra, Holectypus depressus, 
H. hemisphericus, Nerinwa Guisei (n.s.), Natica Hulliana, 
K 2 
