Moss, Iceland, 931, 1218 Irish, 1257 Spanish, 1229 Mosses, 455, 887, 889, 930, 1220-30 club, 961-63, 1229-30 distribution of, 1223-26 leaves of, 1221 organs of, 1221-22 scale, 1226-29 urn, 1226 Moth, Death’s Head, 1572 Moths, wings of, 1431-33 Mould, 1201 Mountains, 566-72 Mouse, dwarf, 1633 Mu Cephei, 188 Mud-lava, 516 Mud-lumps, 610-11 Mud-volcanoes, 519-20, 522-25 Müller, H., 1102 Müller, 1003 Munro, Gen., 1117, 1119, 1122 Mushrooms, 1200, 1207-8 French, 1207 St. Georges, 1207-8 spawn of, 1198 Muskrats, 1638 Mussels, 459, 460 Mycelium, 1198 N Napoleon, 787 Natural selection, 1122, 1130, 1482-1512 Nebula, definition of, 180-82 great, in Andromeda, 129 in Andromeda (31 Messier), 163-66, 176 in Argo, 155-57 “30 Doradus,” 157 The Dumb-bell, 158 The Keyhole, 155-57 “57 Messier,” 159 “99 Messier,” 161, 167 great, of Orion, 129, 154-55, 176-87 “the trifid” (20 Messier), 157-58 Nebulæ, the, 28-29 “annular,” 159-60 elliptical, 163 planetary, 161-63 “Queen of the,” 129 spiral, 166-67 Nebular hypothesis, 310, 433 Nefouds, the, 659-60 Negro, the, 1674-76 Neptune, 41, 312, 313, 317, 332, 430-32 diameter of, 431 distance from the sun, 431 revolution of, 431 satellite of, 432 Nemertes worm, 1371-73 Nettle-plants, 1168-71 Nettles and serpents, 1170-72 Neuroptera, 1413-17 Névé, region of the, 515 Newton, 242, 289, 803, 804, 805 New Zealand, birds of, 1524-25 fauna of, 1561 savages, 1673, 1677 vegetation in, 929-30 Nichol, Prof., 143, 146 Nile, the, 623, 624, 625 Northern Crown, the, 86, 123 North Pole, 88 Nubecula, major, 139, 147-48 minor, 139, 147-48 Nuts, 1174-80 O Oak, 931 Oak-egger moth, 1441-43 Occultations, 131-32 Ocean, floor of the, 676-89 luminosity of the, 759-63 Mesozoic, 672-74 Palæozoic, 670-71 phosphorescence of the, 1320-24 primitive, 666 of the Tertiary Period, 674-75 Oil-wells, 519 Old Red Sandstone, 481, 482, 483, 484, 486 Omega in Centaur, 180 Onychoteuthis, 673 Oolite, animals, 1535 reptiles, 487-88 Opalina, 1290, 1294 Ophiocephalidæ, 1352-53 Opossums, 1534, 1541, 1554, 1579-80, 1648 Opuntias, 1184-85, 1188 Orang-outangs, 1529, 1530, 1547, 1550, 1626 Orchids, 951, 956, 1101-2, 1113, 1154-55 Organ, 1292 Orinoco, the, 623 Orion, 97, 124, 177 belt of, 124 great nebula of, 29, 97, 125, 129, 154-55, 176-87 sword of, 124 Orycteropus, 1571 Ornithorynchus, 1558-59 Orthoceratites, 672 Orthoptera, 1413 Ostrich, 1523-24, 1526, 1550 Oven-bird, 1637-38 Ovid, 64 Owen, 1297 Owl, horned, 1607 Oysters, 459 P Pachydermata, 1536, 1549 extinct, 491-93 Paget, Sir James, 978 Palæontology, 1529, 1532 founder of, 463 Palæotheres, 490-91