400 



INDEX AND GLOSSARY 



tial organ of sexual reproduction, 

 whether of indeterminate or determinate 

 sex, i.e. an organ producing either un- 

 differentiated gametes, ova, or sperms ; 

 see under the various types, and espe- 

 cially 172, 198, 209, 214 



Gon'aduct (gonad. and ittlco, to lead), a 

 tube carrying the ova or sperms from the 

 gonad to the exterior, 295, 313, 319, 323, 

 3 o 



Grapping-lines, Diphyes, 251 



Growing point : Nitella, 211, Moss, 535 : 

 Fern, 350 



Growth, 13 



Guard-cells of stomates, 353 



Gullet, the simple food-tube of Infusoria, 

 47, no : or part of the enteric canal of 

 the higher animals, 280 



GYM'NOSPERMS (yu/ou/os, naked : oWpjoia 

 seed) : Figure, 37^: general characters, 

 373 : structure oflBkies and sporophylls, 



373, 375, : reductron of gamobium (pro- 

 thalli and gonads), 376, : pollination and 

 fertilization, 376, 377 : formation of seed 

 and development of leafy plant, 377 

 Gyncec'ium (yvv^, a female : ot/cos, a 

 dwelling), the collective name for the 

 female sporophylls in the flower of 

 ngiosperms, 381 



H 



m'atochrome (al^a, blood : xp^M a > 

 lour), a red colouring matter allied to 

 chlorophyll, 26 



H^EMATOCOp'CUS (aI M a, blood : KOKKOS 

 a berry): Figure, 24: general characters, 

 23 : rate of progression, 23 : ciliary move- 

 ments, 25, 33 : colouring matters, 26 : 

 motile and stationary phrases. 28 : nutri- 

 tion, 28 : source of energy, 30 ; reproduc- 

 tion, 35 : dimorphism, 35 : animal or 

 plant ? 180 



Haemoglobin (al/ua, blood : globus, a 

 round body, from the circular red cor- 

 puscles of human blood), 58 : properties 

 and functions of, 283 



Head-kidney : trochosphere, 299 



Heart : Crayfish, 318 : Mussel, 323 : 

 Dogfish, 329 



Heat, evolution of, by oxidation of proto- 

 plasm, 17 



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

 ing, 21 



Heliotropism, 168 



Heredity (hereditas, heirship), 147 



Hermaph'rodite (epju.a<J>p6StTo?, from 

 Hermes and Aphrodite). See Monoecious. 



Heterpgen'esiS (erepos, different : -yeVecri?, 

 origin), meaning of term, 102 : supposed 

 cases of, 103 : not to be confounded with 

 metamorphosis or with evolution, 104 



HETEROM'ITA (eVepos, different : /uuVos, 



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 ? 181 



High and low organisms, 106 



Higher (triploblastic) animals, uniformity 

 in general structure of, 307 



Higher (vascular) plants, uniformity in 

 general structure of, 363 



Histol'Ogy (tcrrtW, a thing woven : Aoyo?, 

 a discussion), minute or microscopic 

 anatomy. 



Holophyt'ic (6Aos, whole : ^UTOI', a plant), 

 nutrition, defined, 31 



Holozo'ic (oAo?, whole : <Jwoi', an animal), 

 nutrition, defined, 31 



Homegen'esis (6/ot6s, the same : yeVco-t? 

 origin), meaning of the term, 102 



Homol'OgOUS (ojaoAoyos, agreeing), applied 

 to parts which have had a common 

 origin, 243 



Homomorph'ism homomorph'ic (6/u6? 



the same : ju.op</j, form), existing under 



a single form, 139 

 Host, term applied to the organism upon 



which a parasite preys, 123 

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



222, 226, 228, 235 : occurrence and general 

 characters, 221 : species, 223 : move- 

 ments, 223, 224 : mode of feeding, 224 : 

 microscopic structure, 225 : digestion, 

 232 : asexual, artificial, and sexual re- 

 production 233, 235 : development, 236 



Hydr'anth (vSpa, a water-serpent : avdos 

 a flower), the nutritive zooid of a hydroid 

 polype, 239, 243 



Hydroid (vSpa, a water-serpent : elfio? 

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

 compound organisms, the zooids of which 

 have a general resemblance to Hydra, 

 237 



Hyper 'trophy (iiTrep, over : rpo<j>rf, nourish- 

 ment), an increase in size beyond the 

 usual limits, 118 



Hyph'a (u(J>cuVco, to weave) applied to the 

 separate filaments of a fungus : they 

 may be mycelial (see mycelium), sub- 

 merged, or aerial : Mucor, 160, 168, 

 Penicillium, 185, 188 



Hyp'odermis ( VTTO, under : 8e'pju.a, skin), 

 Fern, 345, 348 



Hyp'OStome (UTTO, under : erro/xa, mouth), 



223, 239 



Immortality, virtual, of lower organisms, 



21 

 Income and expenditure of protoplasm, 



18 



Individual. See Zooid. 

 Individuation, meaning of the term. 233. 



254 



