On a Remarkable Exposure of the Kellaway’s Rock in a recent 
Cutting near Cirencester. By Professor Atten Harker, 
F.L.S. Read 11th March, 1884. ; 
In the valley of the Churn, about 13 miles 8.S.E. of the 
town of Cirencester, there is a spur of rising ground, which 
extends almost due North and South, and terminates close to 
the village of South Cerney. Its greatest elevation is from 
35 to 40 feet above the level of the valley ; its western flank is 
abrupt, almost steep, eastward it slopes gently to the lower 
ground. The new railway from Cirencester to Swindon, has 
cut through this rising ground in a direction almost at right 
angles to the trend of the spur, a quarter of a mile from its 
southern termination. This cutting has exposed the very 
interesting section which it is the object of this paper to 
describe—interesting, not only on account of the petrological 
and paleontological character of the beds which form this 
hill, but further, because of certain remarkable physical 
phenomena presented by one bed in particular. At the request 
of the Club, made on the occasion of its visit to the cutting in 
June last year, I have brought the matter forward for the 
discussion of the phenomena alluded to, as they appear to be, 
so far as I can discover, of a unique character in our local 
geology. The petrological features of the exposed beds, 
together with an account of their contained fossils, naturally 
demand our first attention. The accompanying section is to 
