Obituary notices: Thomas Vipond Barker, 1881–1931; Ethelbert William Blair, 1895–1931; Frank Wrigglesworth Clarke, 1847–1931; Harold Baily Dixon, 1852–1930; William Eric Downey, 1900–1931; Charles Thomas Heycock, 1858–1931; Charles Alexander Keane, 1864–1931; Robert Law, 1870–1930; The Rt. Hon. Lord Melchett, D.Sc., LL.D., F.R.S., 1868–1930; John Edward Purvis, 1862–1930; Henry Droop Richmond, 1867–1931; Thomas Barlow Wood, 1869–1929