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Show Quake's Advance Guard. On the theory that the movement of tho earth's crust constituting an earthquake earth-quake begins on n very small scnle, to be followed later by the greater adjustments ad-justments thnt do tho dnmnge, Orlls L. Kennedy of Snn Bernardino, Cnl., believes that he can give enrthquako warnings by observing tho cracks In Inyers of cement, put down In certnln California districts. It Is asserted that In this way Mr. Kennedy predicted predict-ed the qunke that destroyed part of Hornet nnd Snn Jacinto, Cnl., something some-thing moro tlinn ft yenr ngo, no Is now plnnnlng to construct n ribbon of cement nbout n foot thick nnd 1,000 feet long for Inborutory purposes. |