3 _Witch_. Scale of dragon; tooth of wolf; Witches' mummy; maw and gulf Of the ravin'd salt-sea shark; Root of hemlock, digg'd i' the dark; Liver of blaspheming Jew; Gall of goat; and slips of yew, Silver'd in the moon's eclipse; Nose of Turk, and Tartar's lips; Finger of birth-strangled babe, Ditch delivered by a drab,-- Make the gruel thick and slab: Add thereto a tiger's chaudron, For the ingredients of our cauldron. _All._ Double, double toil and trouble; Fire, burn; and, cauldron, bubble. 2 _Witch_. Cool it with a baboon's blood; Then the charm is firm and good. _Hecate._ O, well done! I commend your pains; And every one shall share i' the gains. And now about the cauldron sing, Like elves and fairies in a ring, Enchanting all that you put in. SONG. 'Black spirits and white, Red spirits and grey; Mingle, mingle, mingle, You that mingle may.' 2 _Witch_. By the pricking of my thumbs, Something wicked this way comes:-- Open, locks, whoever knocks."