EVERYDAY SCIENCE 



References are to pages 



Animals Continued 



vertebrates 400, 405-421, 423, 

 533-534 



amphibia, birds, fish, 

 mammals, marsu- 

 pials, reptiles . . 400 

 man (a mammal) ; see 



Man 

 dependents (parasites and 



saprophytes) .... 397 



food as energy-maker of . . 399, 



423, 425-458 



physical features of earth as 

 affecting .... 541-553 



Anther (of flower) 387 



Anti-cyclones 224 



Antitoxins '.444 



Arcturus, distance from ... 7 



Arid lands 336-338 



Arteries . . . 408-409,411-412 

 Artesian wells .... 197-198 

 Ash (in volcanic eruptions) . . 504 

 Asteroids (planetoids) ... 11 



Vesta 11 



Atmosphere ; see Air 



At'olls 549 



Atoms .... 50-51,58,500,501 



electrons 500,501 



Attraction ; see Earth; Elec- 

 tricity ; Magnetism ; Matter 



Auditory nerve 418 



Auricles (of heart) 412 



Aurora Bo-re- al 'is (" Northern 



Lights ") 360 



Axis (of earth) . . 8-9, 25-31, 39 

 Axle, wheel and ; see Wheel and 

 axle 



Bacteria . . . .98-99, 120-122, 303, 



313-318, 361-362, 398-399, 



401, 422, 435-449, 516-517 



air, general purity of 120-122, 443 



beneficent 435-438 



classes and varieties of .'398-399 

 coal and peat developed by 



516-517 



decay caused by ... 303, 315 

 disease-breeding. . 401,441-444 

 fertilizers of soil, as 315, 317-318 



Bacteria Continued 



forms of 438-439 



harmful . 314,435-439,445-449 

 food spoiled by . . .445-449 

 health and sanitation vs. 



120-122, 444-447 



microbes 98,443 



nitrogen prepared for life- 

 uses by ... 98-99, 317-318 



number of . 314 



propagation of . . 398-399, 422 

 ptomaines caused by ... 439 

 soils developed by . 314, 315-318 



structure of 398 



water polluted by ... 445-449 

 see also Fungi ; Molds ; 

 Protozoa; Yeasts 



Barograph 130 



Barometer . . 128-131, 134, 217 

 Bars, sand . . . . 162, 258, 282 

 Basalt (ig'neous rock) . . . 253 



Bases 54-59 



alkalies 55 



neutralization of . . 55, 58-59 



Beach 161,251 



Bees (honey-bees) . . . 403-405 

 Bell, A. G. (inventor of tele- 

 phone) 495 



Beverages .... 431-432,456 

 Birds (vertebrate animals) . . 400 

 Blizzard (snow and wind storm) 228 



Blood 410-411 



corpuscles, red and white* . 411 



haemoglobin 411 



plasma 411 



Boiling point . 100, 125-127, 134, 136 

 Boracic acid (a disinfectant) . 445 

 Borax (an aid in emulsifying) . 146 



Brain 413,418 



Bread 437-438 



Breathing (respiration) . . 407-410 

 means of obtaining energy 



from air 407 



organs utilized in ... 407408 

 Bridges, natural (of Utah and 



Virginia) 198 



Bubo'nic plague (protozoan 



disease) 454 



Bud (of plant) 377-378 



