Written On A Bridge

When soft September brings again
To yonder gorse its golden glow,
And Snowdon sends its autumn rain
To bid thy current livelier flow;
Amid that ashen foliage light
When scarlet beads are glistering bright,
While alder boughs unchanged are seen
In summer livery of green;
When clouds before the cooler breeze
Are flying, white and large; with these
Returning, so may I return,
And find thee changeless, Pont-y-wern.