Haug, Dr., 202, 205. Heat, produced by work, 41, 42; nature of, 43; performs work, 44, 47; and electricity, 54, 61; and the stability of substances, 74; in chemistry, 75. Helmholz, 32. Hercules, 193, 197. Heredity, the principle of, 117-121; in education, 240. Hesperornis, 123. Hillel, morality of, 188. Hindoo religion, 152, 156; migration, 199. Horace, 163. Horse, 119. Human remains in Tertiary period, 100; implements, prehistoric, 144, 145. Hume, 162. Huxley, Professor, v., vi., 78, 86, 122, 172, 203; on spontaneous generation, 85; on the protista, 94; on the uniformity of law in Nature, 146. Hydrates, 69. Hydrochloric acid, 16, 70, 71. Hydrogen, 11, 13, 16-18, 70, 71, 74, 75; composition of, 15; in the sun, 26; in dynamite, 50; in water, 52, 68, 238; in the accumulator, 63; in acids, 69; in the protoplasm, 80; in a dead body, 88. Hypnotism, 134, 192; blindness cured by, 165, 166; an old lady dancing through, 193. Ibn Ezra, 172. India, British railways in, 250. Indians, North American, totem of the, 150; murder amongst the, 189. Indigotine, 86. Induction, phenomena of, 58. Intellectual faculties, the seat of the, 133, 134. Iodine vapour, 75. Iranian migration, 199; language, 200. Ireland, popular ignorance of the land question in, 9; rents in, 233, 234; contracts in, 254; railways in, 262. Iron, filings and a magnet, 1, 10, 11, 27; contraction of, 49, 50; bar and a magnet, 68; rust, 68, 81; motion of, 83. Irving, Edward, 166. Isaiah, 187. Isomerism, 74. Istar, vi. Jehovah, gradual conception of, 157, 158, 186. Jehuda Hilmi, 172. Jesus, on miracles, 168, 169; the personification of Ormuzd, 180-183, 204; an historical personage, 198; adopted a Jewish view of religion, 212. Jewish doctors on God, 172; gradual development of the, religion, 157; morality in the, religion, 186, 187. Jijibhoy, Jamsedjee, Sir, 217. “Jingoism,” 241. Joule, Dr., 42, 46. Jupiter, the planet, 22, 25. Kant, 141, 142. Kesar, 152, 153. Knowledge, limits of our, 125-127, 136, 139-141. Knox, John, 221. Lakman and Lakmana, 152. Latimer, 221. Law in Nature, 6, 144, 145, 164, 171; common, 236. Lead, 63. Leibnitz, 194. Lichens, 95, 96. Light, waves, 19, 23, 24, 26-28, 43; velocity of, 21, 22; energy in, 47; electric, 56, 57, 61. Lightning conductors, 163. Lourdes, miracles at, 168. Luther, 198 Magnet, the, 1, 2, 27, 68, 70, 71; nature of, 58. Magnetism, vii. Mahometanism, 157, 158, 198, 213. Maimonides on God, 172. Manuals in geology, 100.