648 



Index 



alloys, 29, 30, 615 



alternating current, 223, 224, 266, 



615 



altimeter, 40, 615 

 altitude, 89, 119, 615 

 aluminum, 28, 30, 205, 279 

 ammeter, 211, 615 

 ammonia, 62, 63, 615 

 amoeba, 313, 321-322, 324-325, 393, 



615, (313, 321} 

 ampere, 211-212, 615 

 Ampere, A., 575 

 amylopsin, 403, 405, 615 

 anaesthetic, 552, 615 

 Andromeda, 164, (163) 

 anemometer, 138-139, 616, (139} 

 aneroid barometer, 138-139, 616, 



(139} 

 animals, 616 



and soil, 301, 564 



many-celled, 324-327 



one-celled, 319-327, 345, 392-393, 

 413, 453, 454, (313, 319, 321, 323} 



relation to man, 538-544 

 annealing, 304, 616 

 anopheles mosquito, 541-542, (542} 

 antenna, 235, 236, 237, 616, (234, 



235} 



anthracite coal, 90-91, 93, 616 

 anti-cyclone, 135, 145, 616 

 antipyrin, 387, 616 

 antiseptic, 463, 471, 616 

 antiseptic surgery, 473, 552, 565 

 antitoxin, 347, 455, 457, 475, 552, 



616 



anti-trade winds, 132, 134, 616 

 aorta, 418, 420, 616, (418} 

 apoplexy, 424, 616 

 appendix, 401, 403, (401) 

 aquarium, 535-537, 616, (536) 

 aqueduct, 48, 55, 616 

 Arbor Day, 524 

 arc light, 192-193, 231, 593, 616 

 argon, 232, 573 

 armature, 217-218, 223, 266, 616, 



(218) 

 arteries, 416, 418, 419, 420, 424, 434, 



616, (418, 420) 



artesian well, 57-58, 92, 616, (58) 

 artificial, 



ice, 61-62, 597 



artificial Cont'd 



lighting, 92, 180, 190-193, 231-232, 

 568, 592-594 



respiration, 343-345, (344) 



rock, 296, (296) 

 asbestos, 84 



aseptic surgery, 473, 552, 565 

 asphalt, 256-257, 616 

 asphyxia, 479, 616 

 aspirin, 387, 616 

 assimilation, 616 



animals and man, 312, 320, 322, 

 328, 424-425 



plants, 312, 496 

 astigmatism, 189, 616, (190) 

 astrolabe, 548, 616 

 astronomy, 6, 148-167, 616 

 atmosphere, 34, 39, 102, 165, 616 



of sun, 150 



temperature of, 118, 121, 122, 126, 



131 



atmospheric pressure, 37-40, 52, 

 119, 121, 131, 132-139, 282, 286 



measure of, 39-40, 121, 138-139, 



(40, 139) 



atom, 22-23, 208, 617 

 atomic theory, 22-23, 617 

 auditory canal, 175, 176, 617, (175) 

 auditory nerve, 175, 176, 617, (775) 

 auricle, 418, 420, 617, (418) 

 autogiro, 580-582, 617, (581) 

 automatic pilot, 605 

 automatic track recorder, 605, (604) 

 automobile, 41, 92, 262, 263-265, 

 547, 605, 607, (606) 



tire, 40, 41, 82 

 aviation, 278-289, 547, 570, 580-582, 



591-593, 603, 605 

 axis cylinder, 431 

 axis of the earth, 132, 156, 159, 162 



B 



bacilli, 458, 617 

 backbone, 330, 433 

 Bacon, Francis, 556, 575, (556) 

 bacteria, 439-450, 617, (316, 440, 442, 

 444, 460) 



abundance, 441 



and decay, 445 



