Much has been accomplished, but much still remains to be done. There is around the Pole a tract of over two million square miles which have never yet been visited by a human being, and there can be no doubt that if this tract can be made to give up its secrets the world of science will profit immensely. The Pole itself still remains to be conquered, and though it is difficult at present to see how that terribly arduous journey over the rough seas of palæocrystic ice is to be accomplished, science will doubtless find a way. Of this, at any rate, we may be sure; so long as the Pole retains a single secret, there will not be wanting brave men who will gladly go through any dangers, and suffer any privations, if they can but wrest it from its prison of ice. [Illustration: CHART OF THE NORTH POLAR REGIONS ] INDEX A Abruzzi, The Duke of the, 301 _et seq._ Adam, 54. _Advance_, the, 132, 182 _et seq._ Akaitcho, 49. Aldrich, Pelham, 216; sledging expedition, 219. _Alert_, the, voyage of, 215. _Alexander_, the, 35. Alexieff, 24. Ambler, Dr, 249. Anderson, James, 168. Andrée, 289, etc. Ankudinoff, 24. Anne, Empress, 24. Archangel, 7. Armitage, Lieut., 273. Armstrong, Dr, 143 _et seq._ _Assistance_, the, 132, 152, 156. Astrup, Elvind, 264 _et seq._ Augustus, 60 _et seq._ Austin, Capt. H., 132 _et seq._ B Back, George, 31, 45, 71, 87, 95 _et seq._ Baffin, William, 20 _et seq._ Banks, Sir Joseph, 30. Baptiste, 73. Barents, W., 12 _et seq._ Barren Ground, 53. Barrow, Sir John, 30. Battye, Trevor, 287. _Bear_, the, 231. Beaumont, Lieut., Expedition of, 221. Beechey, 31 _et seq._, 38, 79, 102. Beechey Island, 132. Belanger, 59. Belcher, Sir E., 150 _et seq._ Bellot, J. R., 135; death, 156. Bennett, J. G., 244. Benoit, 60. Bering, Vitus, expeditions of, 25, 26 death, 26. Bessels, Dr, 195. Bird, John, 113. Bismarck, Count, 223. Blonkvist, 273. Blosseville, Lieut., 258. _Blossom_, H.M.S., 71. _Bona Esperanza_, the, 6. Booth, Felix, 86. Borgen, Dr, 201. Boyle, John, 145. Brainan, Sergt., 228. Brooks, 182, 185. Bruce, James, 113. Brusneff, 307. Buchan, Capt., 31 _et seq._ Buddington, Capt. J. M., 157, 194, 195. Button, Sir Thomas, 20. Bylot, Richard, 20 _et seq._ C Cabot, John, 2. Cabot, Sebastian, 2. Cagni, U., 301. _Carcase_, the, 27. Carlsen, Capt. E., 236. Carnegie, A., 236. _Castor_, the, 104. Chancellor, Capt. Richard, 6 _et seq._ Chester, 195. Child, 271. Chipps, Lieut., 249. Christian, Hans, 187 _et seq._, 216. Chydenius, Prof., 236. Clavering, Capt., 258. Clerke, Capt., 29. Collinson, Capt. Richard, 137; voyage of, 147 _et seq._, 155. Columbus, 2. Coningham, Mrs, 118. Conway, H. E., 287. Conway, Sir Martin, 287 _et seq._ Cook, Capt., 29. Cook, Dr, 264. Copeland, Dr, 201.