The Royal Research ship, Discovery II, arrived at St Katherine's Dock, London, on July 4, thus completing her third commission, like the others of twenty months' duration so as to cover two Antarctic summer seasons. The scientific work has this time been in the charge of Dr N. A. Mackintosh, with Mr H. F. P. Herdman as chief hydrologist, and Lieutenant A. L. Nelson, R.N.R., in executive command.