53^ 



GENERAL BIOLOGY 



PAGE 



Grafting wax 523 



Grasshopper 113, 343 



Grasshopper eggs 45 



Green plants 370 



Gregarine 113 



Group development 242 



Groups of organisms 220 



Group radiation 239 



Growing point 129 



Growth habit 373 



Guard cells 143 



Guest gall-flies 45 



Guide marks • 33 



Guide streaks 12 



Guinea pigs 314 



Gymnosperms 152 



Gypsy moth 399 



Gyrinus 386 



Habit 483 



Hemoglobin 177 



Hairs of bees 23 



Halesus 475, 476, 478 



Half embryos 358 



Hand 486 



Harmony 509 



Hawk 480 



Head 17 



Head Kidney 204 



Heart 187 



Heat 85 



Hemiptera 21,42,43,51 



Hemipterous gall makers . 42 

 Hemispheres of brain . .457, 462 



Heptagenia 244 



Herbivores 379 



Hereditary diseases 318 



Heredity 259, 289 



Hermaphroditism 169 



Heterogeneous inheritance 310 



Hertwig 209 



Hibernation 376 



Historical documents .... 492 



History of germ cells 296 



Homology 223, 233, 258, 264 



Honey bee 19 



Honey dew 48, 5 1 



Hormones 443 



Horse 250 



Horsetail , 136 



' PAGE 



Host 396 



Human brain 487 



Human hand 486 



Human population 326 



Human species 48 5 



Humming-bird flowers ... 12 



Hunter stage 495 



Husbandry 51, 496 



Hybrids 307, 311 



Hydra 157, 164,354,471 



Hydranth 330 



Hydroid 330 



Hydrophytes 372 



Hydroscopic cells 136, 138 



Hyla 426 



Hymenium 96 



Hymenoptera 24, 42 



Hymenopterous gall makers 43 



Hyoid apparatus 181 



Hyoid bone 204 



Hyper-parasites 399 



Hypertrophy 367 



Ideal condition of society 326 



Ids 301 



Imago 344 



Imitation 519 



Implements 496 



Incisor teeth 259 



Inclusions 59 



Income 91 



Indian com . 51 



Indian pipe 397 



Infancy 489 



Infundibulum ... 200 



Inheritance 295 



Inheritance of acquired 



characters 318 



Insects 17 



Instincts 473 



Integuments 153 



Intensified inheritance ... 310 



Intercommunication .... ^42 



Interdependence 4, 7, "68 



Intergradation 264 



Intermediate forms 91 



Internal gills 411 



Internal secretions 44^ 



Intestine 107 



Inventor stage , . . . 497 



