INDEX 



4S3 



Lamarckism, 111. 



Lankester, 197. 



Laveran, 352. 



Laws, of science, 9. 



Lecanium olece (illus.), 366. 



Lemur furcifer (illus.), 455. 



Lepas, metamorphosis of (illus.), 

 234. 



Lepomis megalotis (illus.), 17. 



Leptodera hyalina, showing sex 

 dimorphism (illus.), 224. 



Leptothorax emersoni, nest of (illus.), 

 393. 



Lepus, species of, showing differ- 

 ences (illus.), 320. 



Lerema accius, distribution of (il- 

 lus.), 310. 



Lerncecera (illus.), 359. 



Life, duration of, 240; its physical 

 basis, 25; origin of, 42; simplest 

 expression, 25. 



Lilies, Burbank's work with, 100. 



Lily, improved seedling with two 

 petals (illus.), 100. 



Lina lapponica (illus.), 194. 



Linckia, regeneration of (illus.), 284. 



Linnaeus, 14. 



Lizard, common (illus.), 18; pineal 

 eye of, 175; regeneration of 

 (illus.), 286; walking (illus.), 22. 



Lizards, diagram showing variation 

 in, 139. 



Locust, on sand (illus.), 401; red- 

 legged, variation in tibial spines 

 of, 133; (illus.), 136; seventeen- 

 year, variation in tibial spines 

 of (illus.), 136. 



Locusts of Galapagos Islands, show- 

 ing variation (illus.), 313. 



Loeb, J., 280, 428, 429. 



Loligo pealii (illus.), 40. 



Lophortyx calif ornicus (illus.), 15. 



Lucas, 428. 



Lyell, C., 80. 



Macfarland, F. M., 253. 

 Macropus rufus, 339. 



Malaria, parasite producing, 352. 



Malt bus, 67, 68; law of, 67. 



Mammoth, drawing of, on ivory 

 (illus.), 307. 



Man, earliest traces of, 307, 464; 

 embryology of, 460; foot, skele- 

 ton of, compared with that of 

 chimpanzee (illus.), 453; gene- 

 alogy of, 466; Leanderthal, re- 

 mains of (illus.), 465; place in 

 nature of, 451; plan of, com- 

 pared with chimpanzee (illus.), 

 459; profiles of crania of 

 primitive types of (illus.), 466; 

 races of, 454; Russian dog, hair 

 covering of, 175; skull of, com- 

 pared with skull of orang-utan, 

 (illus.), 452; from Spy, skull of 

 (illus.), 466; structure of, 453; 

 teeth of, compared with orang- 

 utan (illus.), 454; vestigial 

 structures in, 461. 



Man and apes, ears of (illus.), 173. 



Mantis, praying, eating grasshopper 

 (illus.),' 61." 



Marshall, G., 418, 419, 423, 424. 



Mating, cross, 186. 



Maturation in cyclops, 272; of egg of 

 cyclops (illus.), 263; (illus.), 

 265. 



Mayer, A., 79. 



McCook, H., 394. 



McCracken, I., 192; experimental 

 work in heredity, 194. 



McCulloch, O. C., 369. 



Mechanism, 276; versus vitalism, 

 246. 



Melanerpes formicivorus bairdii, 

 acorns deposited in tree by 

 (illus.), 432; (illus.), 434. 



Melanoplus femur-rubrum, variation 

 in tibial spines of (illus.), 136. 



Melaphase, defined, 254. 



Mendel, G. J., 187; experiments in 

 heredity, 182. 



Mercurialis annua, variation in 

 leaves of (illus.), 159. 



