INDEX 



373 



Grasshopper, description, 113-123; 

 laboratory, 295-297; organ sys- 

 tems, 117-123; structure, 114-117 

 Green gland, 103, 108 

 Ground substance (see Matrix) 

 Growth, and reproduction, 13 ; ac- 

 cretion, 14 ; intussusception, 14, 24 

 Gullet, Euglena, 30; Paramecium, 

 39, 42, 43 ; Vorticella, 48, 50 



II 



Hagfishes, 154 



Hair, 159, 172 



Hair organs, 133 



Hairs, branched, Bee, 126 



Hand, 166, 180 



Hard Clam, 139 



Head, Bee, 124 ; Crayfish, 99 ; Frog, 



165; Grasshopper, 114; Insect, 



113 

 Head fold, 235 

 Head process, 234 

 Heart, Bee, 129 ; Clam, 142, 143, 144 ; 



Crayfish. 105; Earthworm, 88; 



Fish, 193; Frog, 183, 193, 227; 



Grasshopper, 119; Mammal, 194; 



laboratory, 335 

 Hematochrome, 30 

 Hemichordata, 150 

 Hemocoel, Insect, 118 

 Hemoflagellates, 33 

 Hemoglobin, 191, 193, 198 

 Hen, egg, 233 ; ovary, 232 ; oviduct, 



232 

 Hepatic ducts, Crayfish, 104 

 Hepatic portal system, 195 

 Hepatic veins, 194 

 Hermaphrodites, 57, 64, 92 

 Hind-brain, 209, 226 

 Hind limb, 166, 180 

 Hippocampus, 156 

 Holocephalii, 155 

 Holophytic nutrition, 9-12, 36 (see 



Photosynthesis) 

 Holozoic nutrition, 22, 31 

 Hominidae, 163 

 Homo, 163 



Homologous appendages, 99 

 Homothermal, 159 

 Honey, formation of, 136 

 Honey Bee (see Bee) 

 Honey-cells, 135 



Honeycomb, 135 



Honey sac, 128 



Hormones, 206, 208, 230 



Horse, 162 ; limbs, 181 



House-fly, 137 



Humerus, 180 



Humor, aqueous, 220; vitreous, 220 



Hydra, description, 58-67 ; labora- 

 tory, 269 ; life processes, 62-66 ; 

 structure, 58-62 



Hydranths, 68 



Hydrocauli, 68, 72 



Hydrorhiza, 68, 72 



Hyoid apparatus, 176 



Hypopharynx, 114 



Hypophysis, 207 



Hypostome, 58 



Ileum, 186 



Ilium, 180 



Incisors, teeth, 178 



Incubation, Hen's egg, 234 



Incus, 217 



Infection, 199 



Infundibulum, 207, 209 



Infusoria, 39 (see Ciliates) 



Ingestion, 22, 23 



Inner cell mass, 237 



Insectivora, 161 



Insects, 113-138 (see also Bee and 

 Grasshopper); abdomen, 113, 127; 

 disease carriers, 137 ; economic 

 importance, 137; head, 113; 

 House-fly, 137 ; larva, damage by, 

 137; metamorphosis, 121, 132; 

 Mosquito, 137; nymphs, 122; 

 polymorphism, 136 ; respiratory 

 system, 113, 129 ; Silk Worm, 138 ; 

 thorax, 113; trachea, 129; legs, 

 113, 126 



Insulin, 208 



Interfilamental junctions, 145 



Interlamellar junctions, 145 



Internal secretions (see Hormones) 



Intestinal vein, 196 



Intestinal wall, Earthworm, descrip- 

 tion of, 85, 86 ; Frog, 186 



Intestine, Bee, 129; Clam, 142; 

 Crayfish, 104 ; Earthworm, 85, 86 ; 

 Frog, 183, 185, 227 ; Grasshopper, 

 118 



