Denali-HDR2 , originally uploaded by istargazer . Double, double, toil and trouble; Fire burn and cauldron bubble. Fillet of a fenny snake, In the cauldron boil and bake; Eye of newt and toe of frog, Wool of bat and tongue of dog, Adder's fork and blind-worm's sting, Lizard's leg and howlet's wing, For a charm of powerful trouble, Like a hell-broth boil and bubble. ~ Macbeth, Act IV, Scene I