Obituary notices: William Heath Bayliss, 1879–1939;Thomas Hartley, 1870–1939; Arthur Pinkerton, 1884–1939; Luther Robert Scammell, 1858–1940; George Baty Scott, 1874–1939; Angus Smith, 1863–1940; John Isaac Watts, 1859–1939; Thomas Williams, 1846–1940