During the last ten years there has been great activity in the sector of the Antarctic which lies south of the Indian Ocean. The work of various expeditions has sometimes been simultaneous, and owing to the fact that the areas visited have overlapped, more than one set of names have been published for the same features. An important advance towards the sorting out of the resulting confusion has been made by the Royal Geographical Society's new map entitled “The Course of Antarctic Exploration between Longitudes 20° W. and 110° E.” (Geographical Journal, xciv, No. 3, 1939, text pp. 204–8).