670 



Index 



starch, 89, 355-358, 372, 405, 410, 



500, 507, 510, 527-528, 641 

 starfish, 314, (292) 

 stars, 148, 150, 161-165, 198, 571, 



641 



distance of, 148, 164-165, (165) 

 light of, 164, 165 

 states of matter, 14 

 static electricity, 203-204, 641 

 steam, 14, 18, 63, 88, 101, 109, 462, 



641 



expansion of, 251, 260-261, 273 

 steam engine, 18, 75, 224, 251, 259- 



262, 267, 547, 558, 641, (251) 

 steam heating plant, 104, 109, 112, 



595, 627 

 steam pressure, 88, 251, 260-261, 



273 



steamship, 272-275, 276, (272, 274) 

 steam turbine, 273 

 steapsin, 403, 405, 641 

 steel, 297, 550 

 stegomyia mosquito, 543 

 Steinmetz, C. P., 578 

 stem, 491, 494, 504, 506, 511 

 sterilization, 441, 455, 473, 641 

 sternum, 330, 641, (331) 

 stewing, 370-371, 641 

 Stiles, C. W., 578 

 stimulants, 377-381, 483 

 stipules, 497, 641 

 stomach, 398, 401-402, 405, 413, 641, 



(401) 



stomata, 493, 641 

 stones, building, 293-297 

 storage, 



battery, 210-211, 265, 276, 641, 



(211) 



cell, 210, 641 

 storm, 



paths, 135-136, 139-140, (140) 

 warnings, 131, 141, (141) 

 storms, 131, 134-137 

 stove, 101, 104, 106-107, 112, 340 



jacketed, 107, 629, (107) 

 strains, 481, 641 

 stratus clouds, 127, 128, 129, 641, 



(127) 

 streamlining, 605-608, 641, (606, 



607) 

 streams, 



importance of, 48, 68 



streams Cont'd 



relation to land areas, 47, 48, 120 

 sources of food, 48-49 

 sources of water power, 67-68 



street cars, 18, 226, 266 



structure, 640 



cellular, 312-315, (314, 316) 

 many-celled animals, 324-326 

 of living things, 312-315 

 of plants, 439-440, 491-492, 493, 

 495, 497, 504-508, (316, 440, 498, 

 504, 505, 507) 

 of the human body, 175-176, 187- 



188, 328-332, 339-343, 392, 398- 

 404, 416-429, 430-438, (775, 188, 



189, 330, 331, 340, 341, 342, 399, 

 400, 401, 404, 418, 420, 425, 426, 

 432, 434) 



one-celled animals, 319-322, 325, 



(313, 316, 319, 321, 323) 

 sublingual glands, 400, 641 

 submarine, 275-276, 641, (275) 

 submaxillary glands, 400, 641 

 suffocation, 343, 641 

 sugar, 355-358, 372, 403, 410, 425, 



499, 528-529, (529) 

 sulphates, 355, 641 

 sulphur, 30, 83, 85, 355, 499, 641 

 sun, 83, 148-151, 642, (149, 151) 

 and plants, 180, 491, 499 

 cause of seasons, 156 

 composition of, 83, 150, 151 

 distance of, 148, 150, 156 

 earth's revolution around, 119, 

 132, 134, 151-152, 156, (149, 152) 

 eclipse of, 151, 157, 158, 623, 640, 



(158) 



functions, 151 

 nucleus of, 151 

 relation to tides, 155 

 size of, 150 



source of energy, 19, 68, 81, 83, 

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

 224, 491 

 sun dial, 159 

 sunlight, 19, 159, 180, 186, 356, 440, 



449, 462, 499, 510 

 sunstroke, 484, 642 

 surgery, 473, 552, 565, 642 

 suspension bridge, 257, 642, (257) 

 sweat glands, 426, 642 

 swimming, 334-335 



