Note 524 — ACT V. (continued 2)
Reading edition
Thunder is supposed to rouse eels from the mud. So Shakespeare—“Thunder shall not so awake the beds of eels.” I suppose that Mr. Browning was giving us a piece of Italian folk-lore when he wrote (in Old Pictures in Florence):— “The morn when first it thunders in March, The eel in the pond gives a leap, they say.”