“’Tis the stuff I got in this bag, kid,” answered Tully softly. “’Tis ground carbon and whin it’s poured in with oil it raises the divil with thim nice engines in rich guys’ boats up at the Riverview Yacht Club. From now on till the end o’ summer they’re takin’ trips—see? Well, sure and Big Joe’s got a good pal what looks out for the boats up there ... he’s told beforehand what rich guy’s goin’ out in his boat, he is ... my pal tells me and I go up there—see? Him and me edge aisy like towards the boat and whilst he’s lookin’ out the corners o’ his eye that no one’s comin’, Big Joe uncovers the crank case and ’fore ye could say _scat_, I’m pourin’ me little powder in the breather pipe and sure she’s mixin’ with the oil.”