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Show PERFECTS IMPROVEMENT TO THE SEISMOGRAPH Stanford University, Cal.. March 4. Professor W. E. Durand, head of the department of mechanical engineering, has perfected an Improvement to the seismograph, which, If successful, will prove Invaluable to building interests on the coast While the present Instruments In-struments record only direction and duration of the shock. Prof. Durand's Instrument Is calculated to show the exact destructive forco of a shock at any point, thus being of especial value In "computing the record strength of foundations for buildings In earthquake earth-quake districts. i |