1264. Malt dust consists chiefly of the infant radicle separated from the grain during the process of turning and drying the malt on the kiln, from which it falls down through the holes in the floor to the space below, called the dunge (see Encyc. of Cottage, Farm, and Villa Architect., ᄎ 798.). Like rape-cake, it should be used fresh, and as dry as possible.