658 



Index 



General Thought Questions for 



Discussion and Review, 79-80, 



168-169, 240-241, 310-311, 487- 



489, 612-613 



generator, 224, 265, 626, (74, 224) 

 geology, 6, 626 

 germicides, 449, 626 

 germination, 494, 506-510, 626, (508, 



509} 

 germs, 448, 454, 458-460, 541-544, 



599, (460) 

 protection against, 54-57, 59, 



370-372, 393, 411, 455-457, 460, 



462-463, 466, 468, 473, 541-544, 



563, 626 

 where found, 35, 51, 54, 58, 59, 



358-360 



Gilbert, William, 200, 204 

 glacial deposits, 300, 626 

 glaciers, 300, 626, (300) 

 glands, 399-400, 402-403, 405, 423, 



426, 434, 626 

 glass-making, 303-304 

 glider, 281, 284, 570 

 glossary, 614-646 

 glottis, 174, 626 

 glucose, 374, 425, 626 

 glycogen, 403, 626 

 gold, 28, 297 

 Gorgas, General, 543 

 Graf Zeppelin, 279, 284 

 granite, 291, 293, 626, (293) 

 grape sugar, 356-357, 403, 499, 626 

 graphs, 126, 143 

 grate, 106 

 gravitation, 15, 627 



law of, 7-8 

 gravity, 15, 18, 511, 627 



ventilation system, 112, 644 

 gray matter, 431, 432, 627 

 Great Bear, 161-163, (161) 

 green plants (see plants), 491-503 

 factors affecting growth, 306, 



492, 497, 521 

 food-making, 499-501 

 importance of osmosis, 494-496 

 structure and functions, 312, 



440, 491-503, 504-508, 538 

 Greenwich, 



meridian, 157-159 

 time, 159, 277 

 Gulf Stream, 48, 120 



gullet, 320, 398, 400-401, 627 

 gyro-compass, 603-605, 627 

 gyroscope, 601-605, 627 

 gyro-pilot, 605 

 gyro-stabilizer, 602-603, 627, (602) 



H 



hail, 121, 627 

 Haller, A., von, 576 

 Halley, E., 576 

 hard water, 62 

 Harvey, William, 557, 576 

 health, 49, 54, 409-415, 427, 551-552 

 and air, 37, 111, 122-123, 315, 

 346-349, 422, 458-459, 465, 467, 

 472, 597-601, (467} 

 community protection of, 54, 58- 

 60, 360, 451-464, 465-477, 520, 

 521, (461, 470) 

 hearing, 175, 330 



tests of, 177 

 heart, 331, 416, 418-419, 420, 424, 



627, (418, 420) 

 heat, 16, 18, 23, 62, 81-100, 101-117, 



151, 574, 597, 627 

 air currents caused by, 131, 134, 



138 



conductors, 104, 115 

 distribution of, 102-104, 132 

 effects of, 81, 87-88, 90, 102-104, 



119, 595 



electric, 82, 231, 232, 595-596 

 energy, 18-19, 35, 68, 81, 83, 101, 



119, 251, 361 

 equator, 132, 133, 627 

 exhaustion, 484 

 from oxidation, 23 

 in the body, 35, 340, 349, 361-363 

 light and, 151, 190, 231 

 measurement of, 93, 361-366 

 molecular theory of, 82, 101 

 plant germination, 494, 508-510 

 production of, 23, 27, 81-82, 83 

 radiant, 102, 151 

 relation to power, 18 

 sources of, 81-82, 89 

 sun as source of, 19, 68, 81, 83, 

 102, 119, 131-132, 151, 180-181 

 use in home, 101, 104-111, 114, 



115, 594-597 

 values of common fuels, 93 



