2 Behold the boiling baths at Caer-badus,
Caer-badus > (Bath, in the present county of Avon)
3 Which seethe with secret fire eternally,
secret > hidden
4 And in their entrails, full of quick brimstone,
entrails > inner parts quick > burning, burning strongly; living
5 Nourish the flames which they are warmed upon, 6 That to their people wealth they forth do well,
That > [So that] wealth > well-being
7 And health to every foreign nation: 8 Yet he at last, contending to excel
contending > striving