PSN Friends--FYI there is an excellent article in May Physics Today = magazine on the life and work of Thomas Jaggar as founder of the = Hawaiian Volcano Observatory- (1912) Included is a sketch and brief = description of the Bosch-Omori seismograph-- the workhorse at the time. This description of the early days of scientific work on the Big = Island is of interest to anyone who has visited the site as well as = folks who plan a visit to Hawaiian Volcanoes National Park.PSN Friends--FYI there is an = excellent=20 article in May Physics Today magazine on the life and work of = Thomas=20 Jaggar as founder of the Hawaiian Volcano Observatory- (1912) = Included is=20 a sketch and brief description of the Bosch-Omori seismograph-- the = workhorse at=20 the time.This description of = the early=20 days of scientific work on the Big Island is of interest to anyone = who has=20 visited the site as well as folks who plan a visit to Hawaiian = Volcanoes=20 National Park.Jim=20 Lehman