THEATER SECRETS. Traps--The Swan in “Lohengrin”--The Floating Rhine Daughters in “Rheingold”--The “Sun Robe”--The Ship on the Stage--Miscellaneous Stage Effects--The Destruction of the Temple of Dagon--The Horse Race on the Stage--The Effects in “Siegfried”--Siegfried’s Forge --Siegfried’s Anvil--The Dragon Fafner--Wotan’s Spear--The Bed of Tulips and the Electric Firefly--The Electric Torch and Electric Jewels--An Electrical Duel--The Skirt Dance, 311