INDEX 



37i 



Evidences for evolution, goological, 

 230 



morphological, 231 



taxonomic, 231 

 Evolution, theory of, 7, 229-239 



F 



Factor, 206 

 "Family tree," 257 

 Fats, 121 



digestion of, 124 

 Fatty acids, 121 

 "Female" flower, 192 

 Fermentation, 131 

 Ferments, 123 

 Ferns, 12, 14, 327-334 



gametophyte of, 330 

 Fertilization, 196-198, 345, 354 



double, 196 

 Fertilized egg, 198, 354 

 Fibers, of wood, 356 

 Fibro-vascular bundles, of leaf, 68 



of stem, 103, 104 

 Fibro-vascular cylinder, of root, 46 



of stem, 95, 96 

 Fibro-vascular tissues, 326 

 Filament, 185 

 Filicales, 327 

 Filicineae, 327 

 Fir, 15 

 Fission, 244 

 Flagellates, 268 

 Flocculation, 24 

 Floccules, in soil, 24 

 Floral diagrams, 189, 190 

 Flower, 20, 184-193, 348, 356, 357 



anemophilous, 194 



color of, 191 



dimorphic, 195 



entomophilous, 194 



"female," 192 



irregular, 191 



"male," 192 



naked, 192 



regular, 191 



size of, 191 



texture of, 191 



Flower, unisexual, 192 



variation in, 191 

 Jood, 69, 118 



as a storehouse of potential 

 energy, 126 



compared to fuel, 126 



translocation of, 112 

 Foot, 315, 316, 318 

 Fossils, 230 



Four-o'clock, inheritance in, 226 

 Frond, 327 

 Fructose, 119 

 Fruit, 196, 199 



fleshy, 200, 201 



sugar, 119 

 Fruiting body, of ascomycetes, 293 

 Fucales, 279 

 Fucus, 12, 280 

 Fungi, 11, 13, 264, 284-303 



alga-like, 289 



basidia, 296 



sac, 292 



Galls, 168, 169 



Gametes, 184, 206, 246,'248, 268 



Gametophyte, 248, 250, 284, 311 



of seed plants, male, 347, 360 



of angiosperms, female, 358, 359 



of ferns, 330 



of gymnosperms, female, 345 

 Gamopetalous corolla, 190 

 Gamosepalous calyx, 190 

 Gaylussacia, evolution of species in, 



234 

 Gene, 206 

 Generative cell, 197 

 Generic name, 260 

 Genetics, 3, 210 

 Genotype, 217 

 Gentiann, pollen of, 186 

 Genus, 258 



Geographical distribution and evolu- 

 tion, 231 

 Geotropism, 162 



mechanism of, 162 



negative, 162 



positive, 162 



