4 aiiOLOGY Of 'I'lIK AVON JJAHI.V. 



nearly due S. of ('onygar Hill, tlic l.^oi'i.bury brook oufs a 

 well-marked notch l)etwceii Windmill Hill on the B. and 

 tho hli'cli woods of the Charlton estate on the W. ; while yet 

 farther W. the Charlton brook ciita a second lujtch, less coii- 

 spicuous from this point of view, but well-marked when the 

 stream is followed np to this point of its course. To the W. 

 of this stream the Failands and Poi'tbury ridges coalesce in 

 Priors Wood. 



Lot the observer now follow up tho Portbury bi-ook, 

 taking tho road to the E. of Oonygar Hill, and turning to 

 tho right where it bifurcates. In a quarter of a mile or less 

 tho brook passes under tho road, having been here diverted 

 to the W., that a fall of water might be obtained for driving 

 Portbury Mill, wliich stands at the foot of Conygar Hill. 

 Above this point the road follows tho course of the stream, 

 entering and passing through tho wooded combe before 

 mentioned, towards the upper end of which water for tho 

 supply of Portishead is taken from the brook. A side i-cnul 

 to the right, leading up to a farm (Lower Combe), runs in a 

 line of depression recently occupied by a tributary streamlet, 

 but now dry. l<'ollowed uj), this old streani-C(nirse leads us 

 into the broad and open depression which lies to the S. of 

 Charlton House. Returning to tlie main streamlet, we find 

 that somewhat farther up the road the valley opens out, 

 especially to tho left, where a well-marked lino of depression 

 runs in a S.K. direction. The depression to the N.W. is less 

 marked. After this the road follows the now insignificant 

 stream to its source in a spring at tlui foot of the main 

 lidge, which lies to the S. of our area. Although the stream 

 course hero ceases, the lino of depression is carried on by a, 

 combe, near which tho road runs. This runs for a few hun- 

 dred yards in a southerly direction, a,Tid tlum turns off sluirp 

 to the W., and leads into a basin-like depression near Upper 

 Charlton Fai'm. 



