Index 



497 



Lavoisier, 283-4 

 Lawrence, 44 

 Lazear, 450; ill. 451 

 Leaf -cutting ant, see Ant 

 Leaf hopper, 407 

 Lees, inheritance, 273 

 Lefevre, 436 



Leidy, 54, petty rivalries, remi- 

 niscences, 42 



work, 38, 39, ill. 41 

 Lemming, distribution, 172 



color control, 222 



see Mice, migration 

 Lens, regeneration experiments, 



193-4 



Lepers, care, 477 

 Lesquereux, 43 

 Le Sueur, 31, 54 

 Leucosticte, distribution, 168 

 Lewis and Clark expedition, 32 

 Lice, see Trench fever 



bird, see Isolation 

 Life, characteristics, 278 et seq. 



energy, 281 



explanation, 479 



origin, 117, 479 



oxidation, 280 



see Metabolism, Motility, Proto- 

 plasm, Eeproduction, Ke- 

 sponses 



Life zones, North America, 163 et 

 seq. 



see U. S. Biological Survey 

 Light, apparatus, 367 



in sea, 354, 367-8 



machine, 312 



production; see Animals, phos- 

 phorescence 



response, see Daphnia 

 Lillie, 191 



Limber pine, distribution, 175 

 Limbs, see Vertebrates 

 Linin, see Mitosis 

 Linkage, 211, et seq. 

 Lion, see Sexual Selection 

 Lister, 443 

 Liver, excretion, 322 



ferment, 295, 321 

 Liverworts, alternation of gen- 

 erations, 99 



reproduction, 99 

 Lizards, distribution, 177 



flying, see Pterodactyls 

 Lobster, regeneration, 193 

 Lockjaw, see Tetanus 

 Loeb, 86, 88, 305, 309-10, 317, 327- 

 328 



quoted, 311, 313-6, 319 



Longley, 348 



Longspur, see Lapland 



Looss, 465 



Lop-eared rabbit, see Inheritance 



Low, 450 



Lull, 146; quoted, 137 



Lungfish, Australian, 120 



blood vessels, 89 



distribution, 114 



fossils, 120 



habits, 114 



relation to fish and amphibian, 

 114 



structure, 114 



ill. 112 



Lungs, see Lungfish, Birds 

 Luther, quoted, 33 

 Lycopods, 122 

 Lyell, 44; quoted, 154-5 

 Lynx, see Canada 



M 



Macauley family, inheritance, 273 



MacDougal, 245 



MacDpwell, 251 



Magpie, distribution, spread, 182 



Malaria, organism, life cycle, 97 



see Mosquitoes 

 Mall, 83, 228 

 Mammals, development, cause, 137 



Eocene, 138 



classification, distribution, see 

 IT. S. Biological Survey 



extinction, cause, 145 



grafting, 196-8 



hermaphroditic, 210 



Mesozoic, 136, 138 



origin, 135 



recent, 142 



regeneration, 193 



relation to Dinosaurs, 136-7; ill. 

 137 



sex determination, 230 



sex linked inheritance, 214 



see Chromosomes, Hawks, In- 

 stinct, Owls 

 Man, development, 105, 282 



monstrosities, cause, 228; ill. 

 229-30 



polydactylism, 240, 242 



regeneration, 193 



sex determination, 209, 230 



sex linked inheritance, 214 



syndactylism, 242 



see Inheritance, color 

 Mango, 416, 417; ill. 416 



