’ 
: 
_ VOL. XIV. (1) FOREST BED—-GEOLOGY 31 
2500 years. These various estimates, formed from entirely 
different data, are in remarkable agreement, and, further- 
more, the last movement of the land in both the south- 
west of England and Wales, the Severn area at Westbury- 
on-Severn, and on the north-west of England as far as 
Fleetwood, was one of depression. Nay, even if we go 
further, and extend our observations to Belgium, we find 
that the last movement of the land was here also one of 
depression, as I have shown from papers already referred 
to on the deposits excavated in the construction of the 
New Bruges Ship Canal. 
