Show bent by the sun S un the towering washington bonu ment solla us s is cannot resist the heat ot of the sun poured on its south ern side on a midsummer a day with out a slight bending of the gigantic shaft which is rendered by means of h b copper wire feet I 1 long ong banging hanging in the center of the structure and carrying a plummet suspended in a vessel ot 0 w water ater at noon in summer the apex cf the mon unbent boo feet above tl U e ground is shifted a by expansion of the stone a tew few hundredths of an inch toward the north high winds cause perceptible motions of the plummet and in still weather delicate vibrations of the crust of the earth otherwise inper calved are registered by it |