FORBES, James David FRS, FRSE, FGS (1809-1868)
Born Edinburgh. Physicist and Glaciologist. Worked extensively on conduction of heat and seismology. Invented the seismometer in 1842.
KNOTT, Cargill Gilston. FRS, FRSE.(1856-1922)
Born Penicuik, Midlothian (1856 – 1922). A physicist and mathematician who was a pioneer in seismological research. Secretary of the Royal Society of Edinburgh and President of the Scottish Meteorological Society.