She is like a revolving light-house—pitch darkness alternating with a dazzling brilliancy. – Henry James, “Washington Square,” 1880 [Doctor Sloper. —tεᖇ7
Presently a light breeze sprang up, rolling the fog before it, and then dying away, leaving the lighthouse enshrouded…. The two great fog-bells of the lighthouse were therefore set agoing, and they rang out their slow deep-toned peal all that day and all that night… – R.M. Ballantyne, The Lighthouse: Being the Story of a Great Fight Between Man an