14 



EVERYDAY SCIENCE 



References are to pages 



Loss of energy Continued 



friction 63, 462-463 



methods of lessening 63, 462-463 



Lubricating oils 520 



Luminous bodies (light from) . 348 



Lungs 407-409 



air sacks 408 



air tubes 408 



arteries, capillaries, veins . 409 

 Lysol (disinfectant) . . . 444-445 



Machines 462-465 



law of 465 



Maelstrom (whirlpool) . . . 165 

 Magnetism . . 37-39, 475-480, 501 



attraction of 476 



compass . . . 39,476-478,501 



field of force 476-477 



intensity of attraction . . . 477 

 iron and steel as media for 



magnets 476 



loadstones . . . 37-40, 475-480 



magnets. . . 37-40,476-480 



molecular theory as to . 478-480 



properties of 479-480 



Magnets ; see Loadstones 



Malaria (protozoan disease) 401, 452 



Mammals 400,533 



Man (vertebrate ; mammal) 



166, 277-278, 303, 313-314, 373, 

 383, 398-458, 523-553 



history of 522-523 



structure and functions of : 

 organs : 

 of sense : 



ear, of hearing 416-418, 423 

 eye, of sight . 414-416, 423 

 nose, of smell . . 413, 423 

 skin, of touch . . 413, 423 

 tongue, of taste . 413, 423 

 of vital functions : 



brain, seat of nerve- 

 communication . . 418 

 heart, engine of body 



409-413 

 lungs, blood-purifiers 



of body . . .407-409 

 stomach, digester of 

 body 420 



Man Continued 



skeleton 405-407 



appendages, ribs, skull, 



spine 406-407 



cavities within : 



abdomen ..... 410 



thorax 409 



systems : 



of breathing . 407-410, 423 

 of circulation of blood 



410-413, 423 

 of communication (nerv- 

 ous system) . 413-418, 423 

 of digestion . . 419-421, 423 

 tissues : 



muscles, of locomotion . 407 

 nerves, of sense-trans- 

 mission . . 407,413^23 

 Manures (fertilizers) . . . 316, 334 

 Marble (metamorphic rock) . 255 

 Mars (a planet) .... 11-13 

 brilliancy of . .. . . . 12-13 



day on 12 



distance from earth and sun 11 



Marshes , . . 260 



Marsupials (vertebrate pouch- 

 animals) 538-539 



Mass 66, 94 



Matter 42-59, 67, 310-314, 475-501 

 chemical changes of . . 53, 58 

 chemical compounds of . 53-58 

 chemical mixtures of . 53-54, 58 

 classes of : 



inorganic (mineral) . . 310-311 



organic 314 



composition of ... 42, 49-52, 



58, 67, 500-501 



molecules . . 49-50,51,58,67 



atoms 50-51,58 



electrons .... 500-501 

 compounds of ... 51-52, 58 

 elements of .... 51-52, 58 



energy latent in 57 



forms of : 



gases . . . . 2, 17, 42, 58, 97, 

 110,115,315,472,504 



liquids 42,58 



solids 42,58 



mixtures of .... 53-54, 58 



