540 PRIMARY FACTORS OF ORGANIC EVOLUTION. 



tilation and injuries, 399, 431 ; of 

 nutrition, 423; of regional influ- 

 ences, 435, 440. 



Insecta, 213, 226. 



Insectivora, 136, 140, 143, 305, 332,336, 

 361. 



Intelligence, animal, 500, 504. 



Introduction, i. 



Ischyrotnys typns, Leidy, 351. 



Ismenia, 178, 179. 



Isolation, 387. 



Isospondyli, 103, 106. 



Jackson, R. T., 10, 191, 261, 520, 531. 

 Jaeger, 10. 



Japanese spaniel, 60. 

 Java, 160. 

 Java man, 169. 

 Jayne, H. Dr., 60. 

 Jordan, Dr., 101. 

 Joseph, Dr., 242. 

 Judgment, 504, 506. 

 Juglans nigra, 466; J. regia, 466. 

 Jura, 122, 139, 140, 142, 143, 184, 188, 

 417, 418, 419, 420, 421. 



Katabolism, 481. 



Kinetobathmism, 485. 



Kinetogenesis, 225, 246, 287, 375, 496 ; 

 in Mammalia, 288; in Mollusca, 

 255; of muscle, 249; objections to 

 the theory of, 375 ; of osseous tis- 

 sue, 275 ; under impact and strain, 

 519; under use in Vermes and Ar- 

 thropoda, 268 ; in Vertebrata, 275. 



Kingsley, J. S., 89, 213. 



Koelliker, Dr., 285, 331, 377, 381. 



Kowalevsky, 323. 



Kiikenthal, 333. 



Lacerta nuiralis, 45, 195 ; L. m. albi- 

 ventris, 46 ; L. ni. canipestris, 46 ; L. 

 m. jnactdostriata, 46; L. m.punctu- 

 latofasciata, 46; L. m. reticulata, 

 46 ; L. m. striatotuaculata, 46 ; L. tit. 

 tigrzs, 46. 



Lacertilia, 88, 116, 120, 121, 122, 123, 

 218, 314, 372. 



Lamarck, 2. 5, 7, 8, 12, 14, 241, 387, 



497. 

 Lamellibranchs, 261. 



Lankester, E. R , 71, 113. 



Laramie, 139. 



Larvacea, 215. 



Law of the unspecialized, 172. 



Law, Prof., 431. 



Lawrence, 426, 427. 



Laws of organic evolution, 3. 



Laws of structural relations, 19. 



Leidy, Professor, 351. 



Lemur collaris, 326. 



Lemuridae, 155, 328, 339, 356, 469. 



Lemuroids, 157. 



Lemurs, 61, 150, 154, 155, 156. 



Leperditia, 262. 



Lepidoptera, 203, 204, 237, 440, 441. 



Leporidae, 348. 



Leptodactylus pentadactylus, Laur., 



390. 



Lepus, 351, 361 ; L. sylvaticus, 53. 

 Lerntza. branchialis, 212. 

 Lernaeapoda, 212. 

 Lesshaft, 277. 

 Liege, 160. 



Life, definition of, 513. 

 Light effect, of, on flatfishes, 238. 

 Lima, 266. 

 Limbs, moulding of articulations of, 



287; vertebrate segmentation 01,367. 

 Line of the pisces, 99. 

 Lingula, 176, 177. 

 Liocephalus, 391. 

 Liopeplum, 260. 

 List of papers by American authors 



on the law of kinetogenesis, 528. 

 Litopterna, 357, 359. 

 Lituites, 414 

 Loeb, 455. 



Lohest, 160, 161, 165, 166, 168, 170. 

 Lophiodontidae, 355. 

 Lophobranchii, 105, 106. 

 Louisiana, 50. 

 Loup fork, 139, 148, 315. 

 Lucius estor, 21 ; L. nobilior, 21 ; L. 



vermiculatus, 21. 

 Lytoceratinae, 190. 



Macacus, 391. 

 Machrauchenia, 359. 

 Mackenzie River, 50. 

 Magas, 178, 179. 

 Magasella, 179. 



