Obituary notices: Douglas Heriot Baird, 1883–1940; William Alexander Skeen Calder, 1874–1940; Prince Ginori Conti, 1865–1939; Harry Medforth Dawson, 1876–1939; John Haycock, 1884–1939; George William Thomas Horrod, 1882–1939; Morris Charles Lamb, 1877–1940; Harold Theodore G. van der Linde, 1861–1937; James Scott Maclaurin, 1864–1939; William Frederick Mawer, 1867–1940; Benjamin Dawson Porritt, 1884–1940; Richard Vernon Wheeler, 1883–1939