Index - 709 



Green glands. 319 



Green parenchyma, 243, 250 



Green plants, absorption in, 167-68; constructive 



metabolism in, 169-70; destructive metabolism 



in, 170; distribution in, 168-69; evolution of, 



187; excretion in, 170-71; nutrition of, 158-71; 



respiration in, 170. See also Multicellular 



plants 

 Griffith, F„ 520 

 Growth, crystals, 5; mosses, 241; multicellular 



plants, 228-34; organic and inorganic, 5; 



viruses, 8, 1 1 

 Growth and differentiation hormone (GDH), 415 

 Growth hormones, 410-11 

 Growth movements, 259, 261-67 

 Growth substances, 261, 262-63; characteristics of, 



264-65; importance of, 267 

 Guanine, 134, 521 

 Guanine triphosphate (GTP). 526 

 Guard cells, 242, 249, 250, 251 

 Guinea worm, 644 

 Gullet, 129, 130 

 Gustafson, T., 532 

 Gymnospermae, 617-19; life cycle of, 209, 216-28 



H 



Habit, facilitation and. 457-58 



Hamerton, }. L., 507 



Haploid gamete nuclei, 58 



Haploid parthenogenesis, 276 



Haploid phase of life cycle, 61-62 



Haploidy, 51, 203; in higher plants, 205-07, 

 208 



Haplomycelium, 211 



Hartline, H. K., 427 



Harvey, E. Newton, 442 



Haversian canals. 289 



Hawkins, R., 347 



Heart, 326-29, 664; four-chambered, 326, 331; 

 origin of, 284; three-chambered, 331; two- 

 chambered, 326, 330 



Heat, 66, 185; capacity of water, 72; production, 

 muscular, 436-37; of vaporization, 72 



Heavy oxvgen, 161 



Hecht. S.,'423 



Heliosphaera, 625 



Hematoxylin, 22 



Heme units, 321 



Hemichordata, 665 



Hemiptera, 658 



Hemoglobin, 86, 136. 149. 159, 289. 313. 321: 

 carbamino, 365; oxygen dissociation curves, 

 365; oxyhemoglobin vs., 364; reduced, 364 



Hemolymph, 318-19 



Hemophilia, 323, 499 



Hepatic portal system, 332-33 



Hepaticae, 610 



Heredity, 475-517; asexual reproduction in rela- 

 tion to, 499-501; breeding experiments (see 

 Breeding experiments); chromosome theory of, 

 475; genes, nature and mode of action, 520- 

 36; genie effects, 503-04; germ cells, continuity 

 of, 476-80; inheritance of sex, 495-99; in man, 

 504-10; Mendel's law, 490; metabolism, defects 

 of, 505-07; Morgan's laws, 495; mutations, 510- 

 13; transmission of, machinery of, 475; varia- 

 tions, genetic vs. environmental, 513-17 



Hershey, A. D., 523 



Heterogametes, 58, 596 



Heterogamy, 57-59 



Heterospory, 614 



Heterotransplants, 336 



Heterotrophic nutrition, 182 



Hexose monosaccharides, 79, 80 



High-energy phosphate compounds, 143-44 



High-energy sulfur bond, 154, 155 



Hirudin, 325 



Hirudinea, 649 



Histology, body tissues, origin and nature, 285- 

 90 



Hoagland, M. B., 136 



Hofmann, K., 41 1 



Holdfasts. 599, 600 



Holophytic nutrition, 167-71, 182, 236; holozoic 

 mode contrasted with, 171; significance ol, 

 171 



Holothuria atra, 274 



Holothuroidea, 663-64 



Holo/oic nutrition. 128-33, 182; absorption, 128, 

 130-31; digestion, 128, 129-30; distribution, 

 128, 131-32; egestion, 128, 131; excretion. 128, 

 133; holophytic mode contrasted with, 171; 

 ingestion, 128-29; metabolism, 128, 132, 133- 

 39; respiration, 128, 132-33 



Holter, H, 122 



Homeostasis. 413 



Homo sapiens, 570, 571, 593 



Homolecithal eggs, 272, 277 



Homologous mate, 51 



Homology, 554, 555 



Homospory, 614 



Homotransplants, 336 



Hook, R„ 38 



Hookworms, 645 



Hormones, 137, 301, 307, 308, 314, 376, 377, 383, 

 387. 388, 398, 399. 400, 401. 114. 415; anterior 

 pituitary, 410-12; corticotrophic, 411-12; genie 

 determination of, 536; gonadotrophic, 411; 

 growth, 410-11; invertebrate animals, 414-16; 

 juvenile. 414; lactation controlled by, 402; 

 ovarian, estrous cycle and, 400; parathyroid. 

 405; pituitary gland. 410-13; plant, 265; in 

 protoplasm, 89: thyrotrophic. 105, 411-12 



