Show stone foretells weather there exists a stone which is said unfailingly foretells changes in the weather this stone was found in finland n any years ago by an ex clorer and his since been watched by scientists with great interest iture a white mottled appearance in sunshine gradually turning from gray to black as a rainstorm approaches pro aches the stone is composed of clay niter and rock salt in dry weather the salt in the stone is prom anent but when the air is filled with moisture the salt absorbs the moist ure and turns black thus forming tha barometer |