264 ON THE GEOLOGY AND STATISTICS 
their improved modes of life. From the resistance they 
offered to Edward I., numerous forts and castles were 
erected by that sovereign in various parts of this district, 
so that it assumed the appearance of a province of England, 
kept down by an armed force In this state it continued, 
until it was gradually assimilated to the kingdom to which 
it had been annexed. 
As the arts of refinement made progress in the em- 
pire, it was found that this sequestered district could con- 
tribute io no small degree its share of materials for the 
general improvement of the nation at large ; and as its 
mineral resources were brought into use for the general 
good, they tended gradually to change the face of the dis- 
trict itself. Instead of the impenetrable foiests of the 
Druids, or the frowning castles of the conqueror, thriving 
and populous villages and towns have arisen in the neigh- 
bourhood of the mines v/ith w^hich this part of Wales 
abounds. 
Some of the Grasses and Plants most common in the 
Pastures^ most of them to he met with in both Coun- 
ties of Carnarvon and Anglesea. 
Veronica officinalis 
chamiedrys 
agrostis 
arvensis 
Pinguicula vulgaris 
Anthoxanthum odoratuut 
Valeriana locusta 
Eleocharis palustris 
ScirpLis csespitosus 
Eriophorum polystachion 
aiigiistifoliiim 
vaginatuni 
Nardil s strieta 
Pbalaris arundinacea 
Alopecurus pratensis 
geniculatus 
Agrostis canina 
vulgaris 
alba 
Aira cfespitosa 
fiexuosa 
prEGCOX 
caryopliyliea 
Holcus lanatus 
mollis 
avenaceus 
