John Milne 1850–1913 Source: Wikimedia Commons About John Milne British geologist, mining engineer and inventor of the horizontal pendulum seismograph (1850-1913) People from the Same Era Henry Kirke Porter 1840–1921 politician Concord Tombolotutu 1857–1901 Parigi Moutong James Tomkinson 1840–1910 politician Fausto Bagatti Valsecchi 1843–1914 architect, art collector, lawyer Milan Béla Poroszkay 1847–1919 county attorney, non-fiction writer Hercegszántó Alli Trygg-Helenius 1852–1926 editor, teacher, women's rights activist Raisio