750 PROF. REYNOLDS AND MR. VAUGHAN ON THE _ [ Noy. 1902, 
Mr. H. B. Woodward! notes that the beds seen here are all 
referable to the Kellaways division, and consist of 20 feet of clay 
with septaria, overlain by 10 to 20 feet of sandy and loamy beds. 
The only bed exposed at the time of our visit was a brown sandy 
clay, which yielded :— ee 
Modiola bipartita, Sow. | Ammonites (Proplanulites) Kenigi, 
Trigonia sp. ef. irregularis, Seebach. | Sow. 
Ostrea aff. Sowerbyt, Lye. RAbunesn) | Amim.  (Stephanoceras) —_ coronatus, 
Belemnites obeliscus, Phil. Brig. ; 
We obtained also Ammonites (Stephanocerus) gowerianus, Sow. 
from aneighbouring embankment. Amm. (Cardioceras) modiolarcs, 
Llwyd, we did not find, but numerous specimens of it and of 
Amm. Koenig were to be seen in the neighbouring railway works- 
office at Kingway Barn, and we were informed that they came from 
this cutting. 
Farther east, for a distance of 4 miles, no other exposures were 
met with, the line consisting of a series of big embankments 
chiefly formed of Forest Marble brought from the long cuttings east 
of the tunnel. Immediately west of the road leading from Little to 
Great Somerford, brown unfossiliferous sand is exposed at several 
points. This is noted by Mr. Woodward (loc. cit.), and the sand is 
ascribed to the Callovian. 
The next exposures occur in a cutting about 14 miles east of 
Somerford Station. The sides of the cutting were very much over- 
erown at the time of our visit, but in little drainage-trenches 
Lower Oxtord Clay (Ornatus-Zone) of a very shaly type was 
exposed, containing :— 
Avicula aff. Miinsteri, Goldf. | Ammonites ( Cosmoceras) Jason, Rhein. 
Modiola (?) _ Amm. (C.) ornatus, Schloth. 
Cerithium (?) Amm. (C.) Elizabethe, Pratt. 
Although there are other cuttings, we saw no more exposures 
until a point due south of Brinkworth Rectory was reached. Here, 
in a patch of clay still not earthed-in, we obtained :—- 
Gryphea dilatata, Sow. (Very com- | B£. obeliseus (?) Phillips. 
| B. Oweni, Pratt. 
mon. 
dean Miinsteri, Goldf. | Ammonites ( Quenstedtoceras) Lamberti, 
Tscarca (Y) | Sow. 
Belemnites hastatus, Blainv. | Amim. (Q.) Marie, VOrb. 
B. hastatus var. gracilis, Phillips. Amm. (Q.) Sutherlandi, Sow. 
B. sulcatus, Miller. Amin. (Cardioceras) cordatus, Sow. 
This assemblage of fossils shows that the beds are of Upper 
Oxford-Clay age. Further earthed-in cuttings extend as far as a 
point south of Callowhill Farm; and after that cmbankmente begin, 
and extend as far as Wootton Bassett. 
On the south side of the cutting, at the bridge for the road between 
Chippenham and Swindon, west of Wootton Bassett Station, there 
is a good section showing the Corallian with the underlying top of 
the Oxford Clay. The section is as follows :— 
* Mem. Geol. Surv. ‘Summary of Progress for 1898’ p. 189. 
