III The Bathymetrical Conditions of the Antarctic Regions 436 IV Nautical Positions and Magnetic Deductions 444 V The Navigation of the Antarctic Ice-Pack 448 VI The Possibilities of Antarctic Exploration 453 [Illustration: OFFICIAL MAP OF THE BELGIAN ANTARCTIC EXPEDITION CHARTED BY CAPTAIN GEORGE LECOINTE SECOND IN COMMAND.] LIST OF ILLUSTRATIONS An Antarctic Iceberg (_colour_) _Frontispiece_ PAGE Official Map of the Expedition xx The Crow’s Nest 3 Rio Harbour from Mt. Corcovado _facing_ 16 Rio de Janeiro „ 16 Part of Montevideo „ 36 The _Belgica_ 49 Fuegian Boys (_colour_) _facing_ 68 Indian Mission Huts „ 74 Part of Punta Arenas „ 74 The Wind-Swept Rocks of the Western Fuegian Islands „ 79 Terminating Ridge of the Cordilleras, Beagle Channel „ 80 Ona Women in Full Dress, with Papoose Strapped to the Shoulders „ 89 Ona Men on the Chase „ 89 Types of Onas, Chief Colchicoli and one of his Wives „ 90 An Ona Home „ 95 Onas on the March „ 95 Ona Archery „ 96 Comparative Sizes of an Ona and a Caucasian 98 Ona Hunter Ready for Action _facing_ 105 A Bull Sea-Lion at Rest „ 106 Den of Sea-Lions, Staten Island „ 106 Dr. Frederick A. Cook „ 111 Sunrise over Brabant Island „ 112 Mount William, Antwerp Island „ 121 Mount Allo, Liege Island „ 121 Weddell Sea-Leopards of Belgica Strait „ 122 Cormorants at Home „ 127 Arctowski gathering Geological Specimens, observed by a Megalestris (Cape Lancaster in the Background) „ 127 A Penguin Rookery, Isle Cobalescou „ 128 Penguins--A Family Gathering on the Pack-Ice „ 128