4OO 



INDEX AND GLOSSARY 



differentiated gametes, ova, or sperms : 

 see under the various types, and espe- 

 cially 170, 196, 207, 212 



Gon'aduct (gonad, and dftco, to lead), a 

 tube carrying the ova or sperms from the 

 gonad to the exterior, 291, 310, 315, 319, 

 326 



Grappling-lines, Diphyes, 249 



Growing point : Nitella, 209 : Moss, 331 : 

 Fern, 346 



Growth, 13 



Guard-cells of stomates, 349 



Gullet, the simple food-tube of Infusoria, 

 47, 108 : or part of the enteric canal of 

 the higher animals, 276 



GYM'NOSPERMS (yufxi/o'?,naked: a-nep^a, 

 seed) : Figure, 370 : general characters, 

 369 : structure of cones and sporophylls, 

 369, 371 : reduction of gamobium (pro- 

 thalli and gonads), 372 : pollination and 

 fertilization, 372, 373 : formation of seed 

 and development of leafy plant, 373, 



374 



Gynoec'ium (yvvr/, a female : <KKO?, a 

 dwelling), the collective name for the 

 female sporophylls in the flower of 

 Angiosperms, 377 



H 



Haem'atochrome (at/jia, blood : 



colour), a red colouring matter allied to 

 chlorophyll, 26 



HJEMATOCOC'CUS (aljua, blood : KOKKOS, 

 a berry) : Figure, 24 : general charac- 

 ters, 23 : rate of progression, 23 : ciliary 

 movements, 25, 33 : colouring matters, 

 26 : motile and stationary phases, 28 : 

 nutrition, 28 : source of energy, 30 : re- 

 production, 35 : dimorphism, 35 : animal 

 or plant ? 178 



Haemoglobin (al/u.a, blood : globns, a 

 round body, from the circular red cor- 

 puscles of human blood), 58 : properties 

 and functions of, 279 



Head-kidney, trochosphere, 295 



Heart : Crayfish, 314 : Mussel, 319 : 

 Dogfish, 325 



Heat, evolution of, by oxidation of proto- 

 plasm, 17 



Heat-rigor (rigor, stiffness), heat-stiffen- 

 ing, 21 



Heredity (heredttas, heirship), 145 



Hermaph'rodite (epju.a$pti6ZTo?, from 

 Hermes and Aphrodite). SeeMoncecious. 



Heterogen'esiS (eVepos, different : yeVecri?, 

 origin), meaning of term, 100 : supposed 

 cases of, 101 : not to be confounded with 

 metamorphosis or with evolution, 102 



HETEROM'ITA (erepo?, different : JUI'TO?, 

 a thread) : Figure, 38 : occurrence and 

 general characters, 36 : movements, 37 : 



nutrition, 37 : asexual reproduction, 40 

 conjugation, 41 : development and life- 

 history, 42, 43 : animal or plant? 179 



High and low organisms, 104 



Higher (triploblastic) animals, uniformity 

 in general structure of, 303 



Higher (vascular) plants, uniformity in 

 general structure of, 359 



HistOl'Ogy (iarioi/, a thing woven : Ao'-yos, 

 a discussion), minute or microscopic 

 anatomy. 



Holophyt'ic (0X05, whole : </>uroV, a plant) 

 nutrition, defined, 31 



Holozo'ic (oAos, whole : o>oi/, an animal), 

 nutrition, defined, 31 



Homogen'esis (6/x6s, the same : yeVeo-is, 

 origin), meaning of the term, 100 



Homol'ogOUS (6/xoAo-yos, agreeing), applied 

 to parts which have had a common 

 origin, 240 



Homomorph'ism, homomorph'ic (6/ixos, 

 the same : /u.op<ij, form), existing under 

 a single form, 137 



Host, term applied to the organism upon 

 which a parasite preys, 121 



HYDRA (v5pa, a water-serpent) : Figures, 



220, 224, 232 : occurrence and general 

 characters, 219 : species, 221 : move- 

 ments, 221, 222 : mode of feeding, 222 : 

 microscopic structure, 223 : digestion, 

 229 : asexual, artificial, and sexual re- 

 production, 230, 231 : development, 232, 



Oil 



Hydr'anth (iiSpa, a water-serpent : avOos, 

 a flower), the nutritive zooid of a hydroid 

 polype, 236, 240 



Hydroid (v6pa, a water-serpent : elSos, 

 form) Polypes (TroAuVov?, many-footed), 

 compound organisms, the zooids of 

 which have a general resemblance to 

 Hydra, 234 



Hyper'trophy (vTre'p, over: rpo^-tj, nourish- 

 ment), an increase in size beyond the 

 usual limits, 116 



Hyph'a (v^atVw, to weave), applied to the 

 separate filaments of a fungus : they 



may be mycelial (see mycelium), sub- 

 merged, or aerial : Mucor, 157, 166 

 Penicillium, 183, 186 



Hyp'odermiS (UTTO, under : Se'p/ia, skin), 

 Fern, 341, 344 ^ 



Hyp'ostome (vno, under : 0-To/xa, mouth), 



221, 236 



I 

 Immortality, virtual, of lower organisms, 



21 



Income and expenditure of protoplasm, 18 

 Individual. See Zooid. 

 Individuation, meaning of the term, 230 



251 

 Indus'ium (indusz'um, an under-garment), 



35 



