text:  But let us enliven the reader with something really high--and here is in very high-flown prose part of a description of a waterfall; and it will tell him a secret that in the midst of these fine falls nature keeps a furnace and steam-engine continually at work and having the fire at hand sends up rockets--if you doubt--read:--"And how all the hollows of that foam burn with green fire like so much _shattering chrysoprase_; and how ever and anon startling you with its white flash a jet of spray leaps hissing out of the fall like a rocket bursting in the wind and driven away in dust filling the air with light; and how through the curdling wreaths of the restless crashing abyss below the blue of the water paled by the foam in its body shows purer than the sky through white rain-cloud while the shuddering iris stoops in tremulous stillness over all fading and flashing alternately through the choking spray and shattered sunshine hiding itself at last among the thick golden leaves which toss to and fro in sympathy with the wild water their dripping masses lifted at intervals like sheaves of loaded corn by some stronger gush from the cataract and bowed again upon the mossy rocks as its roar dies away