474 
Geology of Norfolk. 
2. Alluvial Clay. 
This occupies a triangular space, the base of which is a line 
drawn from the canal joining the Yare and the Waveney along the 
course of the latter river and the Bredon Water, and thence along 
part of the North Denes to East Caistor. The other sides of the 
triangle are formed by lines extending, the one from East Caistor, 
about a quarter of a mile south of West Caistor and Runham to 
Stokesby — the other from Stokesby, passing about half a mile 
west of Halvergate, to the point where the canal before men- 
tioned enters the Waveney. 
3. The Peat. 
The western edge of the alluvial clay is bordered with a peaty 
margin, about half a mile broad, which unites the peal districts of 
tlie Waveney and the Yare with those of the Bure and its tribu- 
taries, the Ant and the Hundred Stream. 
That portion of the peat of the Waveney which is in Norfolk 
extends, with a very irregular breadth, varying from less than a 
quarter of a mile to nearly a mile, from Burgh St. Peter's to the 
bog in which that river rises at Lopham Ford. The peat of the 
Yare borders both sides of the river, with an average breadth of 
about a mile and a half, from the Yare and Waveney Canal to 
Sirlingham ; above which, to Trowse near Norwicli, it contracts 
to half a mile. The widest part of the peat of the Bure is below 
the c(mfluence of the Ant and the Hundred Stream with that 
river, the breadth varying from three miles at its northern and 
southern extremities, to about a mile and a half in the centre. 
Along the separate course of these streams the breadth of the peat 
varies from half a mile to a mile on the banks of the Bure from 
its junction with the Ant to Wroxham — on the banks of the Ant 
from the junction before-mentioned to Stalham Broad — and on 
the banks of the Hundred Stream to Hickling and Horsey 
Broads. The upper parts of the Yare and Wensum above Nor- 
wich, and of the Bure and Ant above Wroxham and Stalham, as 
well as their tributary streams, are, in many places, fringed with 
peaty meadows, varying from one-eighth to one-fourth of a mile 
in breadth. 
JI. District ok the deep upper Drift. 
This occupies all that portion of Smith's map, tinted with the 
colour use<l by him to denote light soils, which lies to the east of 
uncle. One of the Commissioners, who remembered the proceedings, 
informed me that Smith laid down faggots in the first instance to aid the 
retention of the sand. 
