Herschel, Sir William, 59-60, 121, 136, 137, 162, 167, 168, 172, 175, 200, 201, 202, 203, 204, 205, 207, 243, 319, 321, 426 Hesiod, 76, 91 Heteromorpha, 1405 Heteroptera, 1419-21 Hevel, 377 Hevelius, 226, 353 Hexactinellidæ, 1307-13 Hierapolis, Baths of, 598 Hildebrand, 1003, 1014 Hind, 128, 190, 400 Hindoos, 1672 Hipparchus, 60, 221 Hipparion, 1298 Hippopotamus, 1532, 1549-50 Hoar-frost, 812 Hofmeister, 1053 Holden, Prof., 161, 163 Holoptychius, 470, 474 Holothuria, 1365 Holtenia carpenteri, 1307-9 Home, Sir Everard, 1387, 1388, 1393 Homer, 72, 75, 76, 297, 359, 761 Homomorpha, 1405 Homomorphism, 1099-1114 Honey-suckers, 1559-60 Hooke, 988 Hooker, Dr., 926, 1214, 1483 Horse, 1532 Horsetails, 887 Hottentots, 1675 Houzeau, 61, 62, 66, 67, 126 Howard, Luke, 821 Hudson, W. H., 1605 Huggins, Dr., 161, 163, 183 Humboldt, A. von, 33, 54, 58, 148, 224-26, 750, 759-60, 776, 906, 920-21, 1143, 1161, 1170, 1180, 1214, 1265 Humboldt’s region, 941 Humming-birds, 1557, 1628-29 Hurricanes, 844 Huxley, 753, 979, 1306, 1500, 1583 Huygens, 154 Hyades, 66, 75, 124, 127, 152-53 Hya-hya-tree, 1167 Hydra, 1328-29 (constellation), 98 Hydrozoa, 1325-27 Hyenas, 1546, 1548-49 Hymenium, 1199, 1200 Hymenoptera, 1406, 1449-58, 1634 I Ice, 507 age, 1128 Ichneumons, 1406, 1408 Ichthyosauri, 673-74 Iliad, quotation from the, 75 Incidence, angle of, 800 India rubber, 1163, 1166 Indian, the (constellation), 78 figs, 1180, 1181, 1184-85 Infusoria, 1290 Insects, 1401-64, 1545, 1552, 1557, 1576, 1577-78, 1620, 1623-24, 1634, 1635 eggs of, 1401 eyes of, 1445-48 and flowers, 894-95, 897, 957, 968, 1028-30, 1064-68, 1069-77, 1112, 1495 fossil, 1421-22 imago of, 1401, 1461 larva of, 1401, 1458-59 mimicry in, 1595, 1600 orders of, 1402-5 parasitic, 1403, 1407, 1408, 1411, 1419, 1449-58 pupa of, 1401, 1460 scales of, 1431-34 “sembling” of, 1443-44 senses of, 1439-48 sounds of, 1434-36 stings of, 1436-39 transformations, 1401-2, 1405-6, 1458-64 type of, 1423 types of, 1423, 1424-25 wings of, 1428-34 Irrawadi, the, 624 Isobars, 788, 789-90 Isothermals, 786 J Jackal, 1546 Jack-on-the-Middle-Horse, 126 Jacob’s staff, 77 Jacquart, Dr., 1694 Jacquin’s region, 941 Jaguar, 1553 Jaxartes, the, 627, 640 Jeffreys, Gwyn, 1309, 1312 Jelly-fish, 962, 1325-29 Job, 75, 119 Jorullo, 561 Josephus, 76 Judd, Prof., 528 Jungfrau, the, 512, 513 Jungles, 1140 Jupiter, 32, 131, 312, 313, 317, 326, 331, 340, 403-15 atmosphere of, 411 brightness of, 404-5 density of, 403-4 orbit of, 404 red spot on, 408-9 rotation of, 403 satellites of, 411-15 spectrum of, 416 spots on, 407-8 volume of, 403 Jussieu, B. de, 993-94