Drum

An instr. of percu ion, consist. ing of a hollow dody of wood or metal, over one or both ends of which a mem. brane (the Acad) is stretched tightly. by means of a hoop, to which is attached an gndle cord tightened by leathern braces, or by a system of rods and screws, The two chief cla es of drums are the rhythmical (those employed to vary and emphasize the rhythm), and the musical (those capable of producing a mus. tone distinct in pth) The commonest forms of the first. cla in modern use are: (1)