IjQuart. tJimrrv. GeoT. Soc. VoZ.ISX. 



62 Mil 

 ( 



TS OF THE RIVERS 



d SEVERN. 



}0 Mile, 



30 



L_ 



40 so Miles 



_i i 



1500 



i 



2000 Feet 



60 



Miles front Source 



i 160 170 180 190 196 



I 1 I I 



