468 
KGlreuter, 149. 
Korschelt, 428, 
Labidocera, 393. 
Lamarck, 146, 222-233. 
Lamarckian factor, 94, 205, 211, 222, 458. 
Lang, 345. 
Law of Biogenesis, 30. 
Leaf, resemblance to, 7. 
Leaves, closing of, 11. 
Leeches, 417. 
Leguminosae, 124. 
Leidy, 46. 
Length of life, 20, 
Lenhossek, 435. 
Leopard, 209. 
Lepidoptera, 172, 
Leptothrix, 320. 
Leucophys, 442. 
Lichen, 9. 
Lillie, 72. 
Limbs of vertebrates, 46, 
Linaria, gor. 
Linnzean species, 85. 
Linnzeus, 191. 
Lion, 6. 
Lizards, 7, 16, 17, 193. 
Lobelia, 148. 
Lobster, 343. 
Lockwood, 138. 
Locusts, 188. 
Loeb, 383-392, 447. 
Lomaria, 290. 
Lowell lectures, 61. 
Lumbriculus, 15. 
Luminous organs, 133. 
Lymnza, 305, 322. 
Lythrum, 365-370. 
Machines, 26, 27, 28. 
McIntosh, 176. 
McNeill, 204. 
Macropus, 192. 
Malva, 4or. 
Mammaiia, origin, 54, 202. 
Man, 2Io, 
Marsh, 49. 
Matthews, 447. 
Mauchamp, 315. 
Maupas, 441, 442, 445. 
May-flies, 19, 353, 389. 
Mead, 72. 
Meckel, 59, 60. 
Melanism, 209. 
Melospiza, 311. 
Mendel, 278-286, 433, 436. 
Mesohippus, 51. 
Mimosa, 404. 
Lndex 
Minnow, 16. 
Minot, 433. 
Mirabilis, 149, 150. 
Mivart, 136, 137. 
Mole, 1, 2, 18, 227. 
Mole-cricket, 1, 2. 
Molothrus, 140. 
Monkeys, 207, 208. 
Mons, Van, 332. 
Montgomery, 432. 
Moor-hen, 453. 
Moquin-Tandon, 303. 
Morton, Lord, 238. 
Moschus, 206, 
Moths, 184, 387, 388. 
Moussu, 257. 
Mozart, 218. 
Mulberry, 313. 
Miiller, 182, 188. 
Miller, Fritz, 148. 
Muscles, 12. 
Mycetes, 205. 
Myzostomum, 422, 
Nageli, 161, 325-339, 459. 
Natural selection, 104-107, 108, I0g, 110, 
etc.; definition of, 117. 
Nauplius, 69. 
Nectar, 124. 
Nectar-feeding insects, 126, 127. 
Nectarines, 134. 
Negroes, 212, 
Nematode, number of eggs, I10. 
Nematus, 425. 
Nemertian worms, 176. 
Neo-Lamarckians, 240, 259-260, 
Nepenthes, Io. 
Nephela, 178. 
Nest of birds, 4, 407-408. 
Neuters, 142. 
Nicotine, 13. 
Nostocs, 320. 
Notochord, 64, 65. 
Nussbaum, 424. 
Ocneria, 428. 
Cnothera, 294-297. 
Oken, 56, 58. 
Old age, at, 25. 
Onites, 232, 
Onychodromus, 442, 
Opossum, 410. 
Organs of little use, 22, 
“ Origin of Species,” 129. 
Ornithorynchus, 54. 
Orobanchia, 330. 
Osborn, 259. 
