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a.m. Recorded a.m. Slight Recorded amplitude April Arequipa Arvonia Berkeley Bldg buildings Bulletin caused Charleston earthquake coast curve damage direction displacement distance duration earth earthquake frequency earthquake shock epicenter eruption fault feet fissures Geological Hawaiian Gazette horizontal instruments intensity Island isoseismal July June Kilauea kilometers Lake Lassen Peak lasting Lick Observatory Light tremors C. W. B. Lisbon Luzon magnetic Manila March miles milligals Milne Mindanao motion mountain movement northwest November observations Observatory origin oscillation Palo Alto pendulum period phenomena Philippine probably quake rainfall Recorded at Charleston Recorded at Summerville region reported rocks Rossi-Forel scale rumbling San Francisco seconds seiches seismic activity seismic disturbances seismograph Seismological Seismological Society Sept shock was felt Society of America Stanford University station strong shock T. S. S. Japan Taal Volcano tectonic tion vertical vibrations volcanic Waiohinu waves Weather Bureau Woerle writer