INTRODUCTION. 11 



H. B. Woodward, lias three feet of loose shelly material, with many small 

 echinoderms at its base, with a lenticularly weathering band of hard stone above, 

 about one foot. This and an opening at Corston, as also the bods at Eullavington 

 Station, are fairly comparable to those at Sutton Benger; but the bods exposed 

 at the Brad field end of the railway cutting seem to belong to the Forest Marble, 

 at least in part. 



12. GrAESDON and Chablton. — The only locality in these two quarries which 

 can be compared to the Cornbrash is in the north-east corner of Garsdon Quarry, 

 where the long face is worked back along the dip, thereby showing higher beds 

 than any seen elsewhere : 



Ft, in. 



1. Clays without noticeable fossils. 



2. Loose rubbly mass of calcareous matter with numerous fussils, including 



Macrocephalites ami Microthyris lagenalis . . .20 



Solid limestone for which the quarry is worked to the bottom. 



On turning the south-east corner the dip again appears, and then bedded, soft, 

 and almost brashy beds rise from beneath. These are plentifully supplied with 

 echinoderms of different species from those above (No. 2). The solid limestone is 

 the main bed, and extends into the long worked and now deserted Charlton 

 quarry. It doubtless forms part of the Forest Marble, as Terebratula digona lias 

 been quoted from it by Prof. J. Buckman. 



13. Murcott. — At a distance of two miles due north from Garsdon, near 

 Murcott Farm, there is a shallow opening of the ordinary type which is remarkable 

 for the number of Astarte and Anabacia which it contains. The Forest Marble 

 and other beds that should lie below it are seen at a distance of half a mile at 

 Hankerton Field Farm. At Pool Keynes and at Sandy Lane other beds corre- 

 sponding to them are mapped as Cornbrash. 



1 k CIRENCESTER district was formerly much more fully exposed, but the 

 exposures, mostly in railway cuttings, are not now available. The best of them 

 from the Midland and South Western J miction Railway south of Watermoor 

 was recorded by H. B. Woodward (<</<. cit., pp. fc43, 111), who gives the following 

 section : 



Ft. in. 



1. Earthy limestone, with an intervening marly clay . . . .40 



2. Impure marly and sandy clay, with nodular limestones containing Am. macro- 



cephalus and Ostrea Jiabelloicles, etc. . . . .10 



3. Hard earthy limestone, with few fossils . . . . .30 



4. Earthy limestone and marl, with large ammonite . . . .10 



5. Earthy and shelly limestones, with seams of marly clay containing Nautilus and 



AvieitLi echinata, etc. . . . . . .60 



Here we find a repetition of the upper limestones with Macrocephalifes at the 

 lop and the rubbly form with Avicula echinata at the base, as we have seen at 



