310 PKOCEEDINGS OF THE GEOLOGICAL SOCIETY. [liar. 18, 



stone belonging to the Lower Bagstone, and having a somewhat 

 greater aggregate thickness than in other parts of the country ; but 

 this may possibly be more apparent than real, and owing to some 

 slight settlement of the hard ragstones, around the flanks of the hill, 

 upon the yielding sands and Upper Lias clays beneath. 



The Cotteswolds. — Passing across the valley of the Avon, we are 

 able to trace these beds past Dryham Park to the quarry half a 

 mile east of Doddington Ash, where the junction of the two Bag- 

 Btones is well exposed, the lower one abounding in fragments of 

 Trichites. 



But, two miles further to the north, in the lane leading from the 

 1 Cross Hands ' Inn to Old Sodbury, the Bagstones are seen under- 

 lain by about 6 or 8 feet of thin-bedded white oolite, the lower beds 

 of which are made up, in part, of comminuted shells. It rests 

 upon a yellowish sandy bed, 2 or 3 feet thick, containing casts of 

 Gresslya ; beneath this are the brown-coloured argillaceous Cepha- 

 lopoda-beds, with Belemnites and casts of Ammonites. Nearly the 

 whole thickness of this white oolite is seen in the lane-side cutting. 

 The Lower Bagstone crops out in the field above the section, and is 

 also seen a little further along the lane, while the Upper Bagstone 

 and overlying Fuller's Earth are exposed in a quarry opposite 

 the inn. 



This white oolite, when followed northward, is seen gradually to 

 increase in thickness, and its relationship to the Bagstones may be 

 well studied in a quarry near Horton Bectory, while its basement- 

 beds and its junction with the upper part of the Cephalopoda-beds 

 are exposed in the lane half a mile south of the Bectory. 



Section near Horton Rectory. 



J feet. 



A. Upper Bagstone. White, thin-bedded, friable oolite 12 



B. Lower Bagstone. Massive, hard, brown limestone, in two 



or three beds, with many fossils about 10 



C. Freestone. Thick-bedded white oolite, used for building- 



stone 12 



D. Yellow sandy rock, containing Gresslya 2 to 3 



E. Cephalopoda-beds (Ammonite-sands or Upper Lias sands). 



Alternate beds of marly, more or less indurated, and rubbly 

 rock, speckled with oolitic grains of peroxide of iron, and 

 containing Belemnites and Ammonites ; 8 feet exposed . . 8 



The Lower Bagstone is here crowded with fossils, among which 

 are Trigonia costata in great numbers, Lima proboscidea, Ostrea 

 Marshii, Trichites, Belemnites, Rhynchonella spinosa, Rhynchonella 

 quadriplicata, &c. The lower beds of the underlying Freestone con- 

 tain a small Pecten in great abundance, which occurs also in the 

 same position at Hawkesbury and Leckhampton. 



A similar section exhibiting both the Bagstones, overlain by the 

 Fuller's Earth, and resting upon the Freestone, which is probably 

 25 feet in thickness, is seen near Hawkesbury, on the road to Pool 

 Farm. 



