Note: Sources: Campbell (Pop. Tales, W. Highlands, No. ii.), with touches from the seventh variant and others, including the casket and key finish, from Curtin's "Son of the King of Erin" (Myths, &c., 32 seq.). Jacobs: "I have also added a specimen of the humorous end pieces added by Gaelic story-tellers; on these tags see an interesting note in MacDougall's Tales, note on p.112. I have found some difficulty in dealing with Campbell's excessive use of the second person singular, "If thou thouest him some two or three times, 'tis well," but beyond that it is wearisome. Practically, I have reserved thou for the speech of giants, who maybe supposed to be somewhat old-fashioned. I fear, however, I have not been quite consistent, though the you's addressed to the apple-pips are grammatically correct as applied to the pair of lovers."