Obituary notices: Ottilie Blum-Bergmann; May Sybil Burr; Joseph Bernard Coleman; Joseph Cowper; Frederick Jonathan Down; Christopher Maurice Walter Grieb; Robert Oswald Hall; Sir Herbert Jackson; Herbert Edward Kirby; Duncan Scott Macnair; Stefan Minovici; Arthur Williams Morgan; Frederick Charles Thompson; George Richard Tweedie; John Augustus Voelcker; Jean Baptiste Senderens