vol. xx (2) NOTES ON COTTESWOLD-MALVERN REGION 
1 2 1 
Frondeg ; 1,200 feet near Macclesfield ; and 800 at Much 
Wenlock. It is not until reaching The Eades near Upton-on- 
Sevem, Pull Court, and Apperley that disproportionate heights 
occur. 
. In discussing the conditions under which gravels and sands 
of Glacial age could have been deposited at exceptional eleva- 
tions on the summits and flanks of low hills, up to about 100 feet 
above the present level of the Severn.it is necessary to consider 
the amount of denudation that must have subsequently taken 
place in and near the river channel in excess of that on the higher 
ground of the Plain on either side. At the commencement of 
Glacial times the distance between the level of the yet diminutive 
Severn and that of the Plain was probably less than at present. 
During the Glacial Epoch the channel was, no doubt, at times 
filled to a considerable height with accumulations of ice and 
debris over which, especially in narrow parts of the valley, 
torrential floods would carry, sometimes on ice-floes, sand, 
gravel, fragments of shells, and erratic boulders to any of the 
elevations at which the Glacial Drift occurs. The floods and 
the Drift materials transported by them would be kept within a 
short distance of the Pleistocene channel. Some of the greater 
Severn floods of recent years have risen between Worcester 
and Gloucester to a height of about 25 feet above low summer 
level. The above hypothesis would account for the absence 
of Glacial Drift from areas beyond the distance of about a mile 
from the river. As the climate became warmer, the snow and 
the greater part of the debris that encumbered the valley 
were swept away, and the flow of the river, with the addition 
of the upper part captured from the Dee in Glacial times, 
became normal. During the last elevation of the land, winch 
came to an end during the Neolithic period, differential erosion 
of the river channel continued, and the rocky bed w r as probably 
still further excavated, with the effect of increasing the distance 
between the water level and the Drift deposits at the greater 
elevations. 
The deposits dealt with in this chapter may therefore be 
regarded as the successive terraces left in the process of removal 
from the Severn Valley of the snow r , ice, and debris that had 
