〃 , Haeckel’s first visit to, 82 J Java, ape-man of, 167, 308 〃 , voyage to, 260, 308 Jena, 42 〃 , Haeckel’s first visit to, 50 _Jugend_, Haeckel number of, 315 Jump, Haeckel’s record, 173 Jurist, Haeckel as a, 22 K Keferstein, Professor, on Darwinism, 148 Keller, Gottfried, 45 Kepler, 16 Kölliker, Albert, 56 Königsberg, Congress at, 99 Kopf, Professor, bust of Haeckel by, 299 Kükenthal, 43 _Kulturkampf_, the, 284 L Lamprey, the, 181 Lancelet, the, 181 Lang, Professor A., on Haeckel, 300 Lange, F. A., 154 Language, evolution of, 150 Lanzarote, Haeckel at, 245 _Last Link_, the, 300 _Last Words on Evolution_, the, 320 Latin, Haeckel’s knowledge of, 36 〃Law of development,” 129 Law, training for the, 23 Lawyers in Haeckel’s family, 22 Lemur, the, 181 Leydig, Frantz, 56 Lichtenstein, Professor, 71 Life, earliest forms of, 151 〃 , origin of, 124 Linné, classification of, 105 Literary production of Haeckel, 299 Lizard, evolution of the, 222 _Lizzia Elizabethæ_, the, 185 Lloyd-Morgan, Professor, 307 Lodge, Sir Oliver, 307 Loofs, Professor, 305 Love of nature in Haeckel, 31 Lyell’s reform of geology, 109 M Macrauchenia, the, 112 Mammoth, the, 106 Man, creation of, 126 〃 , evolution of, 180-1, 279 Man’s genealogical tree, 181 Marine animals, study of, 60 Marriage, Haeckel’s first, 100 〃 〃 second, 253 Mastodon, the, 112 Materialism and idealism, 83, 154 Mathematical types of form, 214 Matter, potentialities of, 204 Mechanical embryology, 249 Medical studies of Haeckel, 72 Medusæ, the, 174, 246 Megatherium, the, 106, 112 Merseburg, 30 Messina, 90 Metaphysics, Haeckel’s views on, 304 Method, analysis of scientific, 200 Meyer, Frau, 253 Microscope, beauty in the, 92 Miklucho-Maclay, 245 Miracles in modern Italy, 134 “Missing link,” the, 308 _Mitrocoma Annæ_, the, 185 Moleschott, 83, 154 Monera, the, 179 Monism, 73, 203, 217 _Monism as a Connecting Link_, the 292 _Monograph on the Calcispongiæ_, the, 272 _Monograph on the Medusæ_, the, 185 _Monograph on the Monera_, the, 182 _Monograph on the Radiolaria_, the, 100, 138 Monophyletic theory of life, the, 158 Morphology, the science of, 190 〃 , history of, 199 Mosaic story of creation, 105, 108 Mottoes, Haeckel’s, 321 Mouth, the primitive, 275 Müller, Fritz, 230 〃 , Johannes, 65-8 〃 〃 , death of, 80 Müller-net, the, 69 Munich, Haeckel and Virchow at, 157, 283 Murray, Sir John, 259 N Naples, Haeckel at, 87 Natural law, relativity of, 232 〃 , philosophy, 48 Natural selection, 119-120 Nature and God, 20 _Naturalist’s Voyage round the World_, 46 _Nausicaa phæacum_, the, 185 Nineteenth century, work of the, 18 Nomenclature, scientific, 185 Nucleus, the, 179 O Oken, L., 144 〃 on embryonic development, 224 Ontogeny, 231 Optimism of early Darwinians, 166