Parts of one continuous mass. The basaltic strata of which they are composed from their compact and crystalline structure seem when contrasted with the neighbouring basaltic streams of subaerial formation to have flowed beneath the pressure of the sea and to have been subsequently elevated. We may suppose that the wide breaches between the mountains were in both cases worn by the waves during their gradual elevation--of which process within recent times there is abundant evidence on the coast-land... read more
