Index 



657 



iood-'-Cont'd 



making, 499-501 



nature and composition of, 354- 

 358 



plants, 501, 527-529, 530, (505, 

 507, 529, 530) 



preparation, 369-376, (371) 



preservation of, 61, 445-448, 552, 

 597, (446) 



requirements of body, 315, 328, 

 330, 354-356, 361-366, 372, 452 



storing-, 494-496, 504, 597 



table, 362, 363, 365, 366 



taking, 312, 320, 322, 328 



tests, 356-357 



use by body, 19, 361-366, 372, 

 398, 416 



values, 354-368 



water as a source of, 48-49 

 foot pound, 75, 243, 625 

 forage plants, 529 

 force, 244, 625 



defined, 243 



lines of, 199, 216-217, 630, (199, 



216) 



forestry, 518, 625 



forests, 89, 90, 136, 514-526, (89, 

 515, 517) 



conservation of, 516-521, (519) 

 formaldehyde, 449, 452, 462, 625 

 fossils, 291-292, 625, (292) 

 fractures, 481-482, 625 

 Franklin, Benjamin, 106, 204, 207 

 freezing, 14, 45, 61-62, 87-88, 121, 



122, 300, 484 



freezing point, 86, 88, 121, 127 

 frequency, 625 



of heat waves, 181 



of light waves, 181 



of radio waves, 181, 236 

 friction, 81, 82, 83-84, 243, 251-252, 



261, 625 



frigid zone, 119, 120, 134, 625, (120) 

 frost, 122, 127, 625 

 frost bite, 484 



fruit-producing plants, 530, (530) 

 frying, 370-371, 625 

 fuel, 19, 67, 81, 105, 259, 273, 339, 

 340, 516, 594-596, 625 



conservation of, 93 



heat values of, 93 



kinds of and origin, 89-93 



fuel oil, 89, 91, 92, 594-595, 626 

 fulcrum, 244-248, 626, (246) 

 Fulton, Robert, 272, 548 

 fumigation, 449, 626 

 functions, 626 



many-celled animals, 315, 324- 



325 



of animals, 312, 315 

 of living things, 312, 315 

 of plants, 312, 440, 492-497, 499- 



501, (500, 508, 509) 

 of the human body, 312, 315, 

 328-332, 339-353, 398-408, 418- 

 429, 432-434, 436, (420) 

 one-celled animals, 319-322, 325, 



392 



fungi, 307, 518, 626 

 furnaces, 92, 95, 104, 107-108, 112, 



297, 594-596, (108, 110, 594) 

 fuses, 232-233, 626 



galaxy, 164 



Galen, C., 576 



Galileo, 556-557, 576 



gall bladder, 401, 403, 626, (401) 



galley, 270 



Galvani, 208 



galvanometer, 223, 626 



ganglia, 434, 626 



gas, 34, 83, 84, 150-151, 626 



defined, 14 



expansion of, 88 



fuels, 89, 92, 595, 596 



kinds of, 24, 25, 27, 31, 88, 191- 



192, 232, 278, 573, 597 

 gas engine, 224, 262-265, 285, 547, 



626, (263, 264) 

 gas mantle, 192, 631 

 gasoline, 89, 91-92, 192, 263, 626 

 gas poisoning, 343 

 gastric, 



glands, 402, 405, 626 



juice, 402, 405, 626 

 gauge, 



depth, 276 



rain, 124, 637, (124) 

 Gay-Lussac, J. L., 576 

 general property, 14, 20, 626 

 general science, 6, 626, (2) 



