554 



INDEX 



Lister, Sir Joseph, developed anti- 

 septic surgery, 539. 



liver, 373, 405; cirrhosis of, 516. 



lobster, 185; food value, 472. 



lockjaw (tetanus), 137, 140, 142. 



locomotion, of amceba 148; of 

 worm, 162; of crayfish, 186. 



locust, 193. 



Locy, "Biology and its Makers," 537. 



lumber, production, 499; careless 

 lumbering, 500. 



lungs, 382-386, 404; infection of, 432. 



lymph, 382; circulation of, 400. 



M 



malaria, 151, 229; see protozoa. 



mammals, characteristics of, 310; 

 valuable for food and clothing 

 products, 482; for transportation 

 and as pets, 483; a few harmful, 

 483. 



mammoth, drawing of, from Cave of 

 the Madeleine, France, 334. 



man, 314; development of, 321-325; 

 primitive, 334; Neanderthal, 335; 

 implements of different ages, 336; 

 races of, 340. 



mandibles, of crayfish, 182; of grass- 

 hopper, 194; of honey bee, 212. 



Manson and Ross, 231. 



mantis, 201. 



maple, 121; "key," 122. 



"Mark Twain" tree (Sequoia), 83. 



marmosets, 318. 



mastication, 435. 



maxillae, of grasshopper, 194; of 

 honey bee, 212. 



maxillipeds (jaw feet), 182. 



medulla, spinal bulb, 410. 



membrane, mucous, of small intestine 

 of dog, 372; tympanic, of man. 417. 



Mendel, Gregor, his "Law of In- 

 heritance," 542-545. 



mental hygiene, 433, 437. 



metamorphosis, of butterfly, 201, 208; 

 of amphibia, 252, 267. 



metazoans, 154; forms of, 157. 



Metchnikoff, Russian scientist, his 

 discovery of functions of white 

 corpuscles, 540. 



microbes, 150. 



micropyle (opening), 31, 35, 42, 113. 



migration, of birds, 300; and distri- 

 bution of Eskimo curlew, 301. 



milk, supervision to insure pure, 441, 

 442. 



milkweed, 121, 122, 123. 



mineral compounds, 19. 



mineral salts, necessity for, 353, 356, 

 359. 



molluscs, 157, 234; food of primitive 

 man, 470. 



monkeys, 318. 



mosquito 224; transmits yellow 

 fever, 225, 226; eggs of, 226; 

 control of, 227, 229; transmits 

 malaria, 231. 



mouth, 365. 



mussels, 471. 



monarch butterfly, metamorphosis of, 

 209, 210. 



monocotyledonous (having one coty- 

 ledon), 33, 79-81. 



mosses, 127. 



moth, compared with butterfly, 210; 

 harmful, codlin, tussock, 474. 



moulting, of crayfish, 187; of birds, 

 284. 



mushrooms, 129, 455. 



myriopods, 173. 



N 



nasal openings, 365. 



nectar glands, 110. 



nervous system, of earthworm, 162; 

 of arthropods, 172, 198, 199; of 

 fish, 244; of frog, 261; of bird, 

 289; of man, 408; effect of alcohol 

 on, 517. 



nests, of orioles, 295; of humming 

 bird, 296; excavated, woven, 296; 

 built-up, 298. 



newt, 270. 



nitrogen, 12, 17; fixation, 447; 



