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 di'uo, 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, 335 : 

 Fern, 350 



Growth, 13 



Guard-cells of stomates, 353 



Gullet, ihe simple food-tube of Infusoria, 

 47, no : or part of the enteric canal of 

 the higher animals, 280 



GYM'NOSPERMS (-yu/ui/os, naked : o-rrepna. 

 seed) : Figure, 374 : general characters, 

 373 : structure of cones and sporophylls, 

 373, 375, : reduction of gamobium (pro- 

 thalli and gonads), 376, : pollination and 

 fertilization, 376, 377 : formation of seed 

 and development of leafy plant, 377 



Gvncec'ium (yvvrj, a female : oucos, a 

 dwelling), the collective name for the 

 female sporophylls in the flower of 

 Angiosperms, 381 



H 



Hsem'atochrome (al/xa, blood : 



colour), a red colouring matter allied to 

 chlorophyll, 26 



H-SMATOCOC CUS (atjua, 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? 1 80 



Haemoglobin (atjaa, 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 (heredltas, heirship), 147 



Hermaph'rodite (ep/ua<f>p65ZTos, from 

 Hermes and Aphrodite). See Monoecious. 



Heterpgen'esiS (eVepos, different : ye'i/ecri?, 

 origin), meaning of term, 102 : supposed 

 cases of, 103 : not to be confounded with 

 metamorphosis or with evolution, 104 



HETEROM'ITA (erepo?, different : /uu'ros, 



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 (triploblasuc) animals, uniformity 



in general structure of, 307 

 Higher (vascular) plants, uniformity in 



general structure of, 363 

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



a discussion), minute or microscopic 



anatomy. 

 Holophyt'ic (oAos, whole : <f>vr6v, a plant), 



nutrition, defined, 31 

 Holozolc (oAos, whole : u>ov, an animal), 



nutrition, defined, 31 

 Homegen'esis (6/ao?, the same : -yeVecris 



origin), meaning of the term, 102 

 Homol'ogOUS (6ju.6Ao-yos, agreeing), applied 



to parts which have had a common 



origin, 243 



Homomorph'ism homomorphlc (6/x6s 



the same : fj-opfaj, form), existing under 

 a single form, 139 



Host, term applied to the organism upon 

 which a parasite preys, 123 



HYDRA (iifipa, 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 : avQos 

 a flower), the nutritive zooid of a hydroid 

 polype, 239, 243 



Hydroid (lifipa, a water-serpent : ei.5o; 

 form) Polypes (n-oAvTrovs, many-footed), 

 compound organisms, the zooids of which 

 have a general resemblance to Hydra, 



237 

 Hyper'trophy(i/7rep, over : rpo<f>"n, nourish- 



ment), an increase in size beyond the 



usual limits, 118 

 Hyph'a (t|>aiVto, 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 : Sep^a, skin), 



Fern, 345, 348 

 Hyp'OStome (vno, under : crro/ia, mouth), 



22 



239 



I 



Immortality, virtual, of lower organisms, 



21 

 Income and expenditure of protoplasm, 



1 8 



Individual. See Zooid. 

 Individuation. meaning of the term, 233. 



254 



