INDEX AND GLOSSARY 



495 



HolOphytlC (6Aos, whole : fyvrov, a plant), 



nutrition, defined, 31 

 Holozo'ic (6Aos. whole : ^wov, an animal), 



nutrition, defined, 31 

 Homogen esis (6/U.6? . the same : yeVeo-t? 



origin), meaning of the term, 102 

 Homol'OgOUS (ofj.6\oyo<;, agreeing), applied 



to parts which have had a common 



origin, 242 

 Homomorph ism homomorph'ic (6/0165, 



the same : fiop^, form), existing under 



a single form, i ^9 

 Host, term applied to the organism upon 



which a parasite preys, 123 

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



219, 223, 225, 232: occurrence and general 

 characters, 218 : species, 220 : move- 

 ments, 220 : mode of feeding, 221 : m.cro- 

 scopic structure, 222 : digestion, 229 : 

 asexual, artificial, and sexual reproduc- 

 tion 230 : development, 233 



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

 a flower), the nutritive zooid of a hydroid 

 polype, 236 



Hydroid (vfipa, a water- serpent : eu5o?, 

 form) Polypes (n-oAvTrov?. many footed), 

 compound organisms, the zooids of which 

 have a general resemblance to Hydra, 

 234 



Hypertrophy (uTre'p, over : rpo^, nourish- 

 ment), an increase in, size beyond the 

 usual limits, 118 



Hyph'a (v0aiVo>, to weave) applied to the 

 separate filaments of a fungus : they 

 may be mycelial (see mycelium), sub- 

 merged, or aerial : Mucor, 160 : Peni- 

 cillium, 185 



Hyp'odermis (wo, under : Se'p/xa , skin), 

 Fern, 413, 416 



Hypostome (viro, under : o-ro/xa, mouth), 



220, 236 



Insolation (insolo, to place in the sun), 



exposure to direct sunlight, 94 

 Integ'ument (integuntentum, a covering) 



of megaspore : Gymnosperms, 456 : 



Angiosperms, 466 

 Inter-cellular spaces, 415 

 Inter-muscular plexus (TrAeVcw, to twine), 



285 

 Internode (inter, between : nodus, a 



knot), the portion of stem intervening 



between two nodes, 205 

 Interstitial (interstltlum, a. space be- 

 tween) cells, Hydra, 224: growth, 



Spirogyra, 198 

 Intestine (intestlnus, internal), part of 



the enteric canal of the higher animals, 



277 

 Intus-SUSCeption (intus, into: suscipio, 



to take up), addition of new matter to 



the interior, 13 

 Iodine, test for starch, 27 

 Irritability (irritabilis, irritable, the 



property of responding to an external 



stimulus, 10 



Jaws : Crayfish, 324 : Dogfish. 368, 375 



Karyokines is (napvov, a kernel or nu- 

 cleus : /ciVrjo-is, a movement), indirect 

 nuclear division, 67 



Katab Olism (/cara^oATJ, a laying down), 

 18. See Metabolism, destructive. 



Kat'astates (Karao-TTJi/ai, to sink down), 

 18. See Mesostates, katabolic. 



Kidney : Crayfish, 337 : Mussel, 359 : 

 Dogfish, 396 



Immortality, virtual, of lower organisms, 



21 

 Income and expenditure of protoplasm, 



18 



Individual See Zooid. 

 Individuation, meaning of the term, 230, 



252 

 IndUS'ium (indusium, an under-garment, 



423 

 Inflores'cence (floresco. to begin to 



flower), an aggregation of cones or 



flowers, 454 



Infusoria (so called because of their fre- 

 quent occurrence in infusions), 107 

 Ingesta (ingero, to put into) and Egesta 



(egero, to expel), balance of, 32 

 Ingestion (ingero, to put into), the taking 



in of solid food, n 



Labial palps, Mussel, 355 



Larva, the free-living young of an animal 



in which development is accompanied by 



a metamorphosis, 293 

 Larval Stages, significance of, Polygor- 



dius, 303 

 Leaf, structure of: Nitella, 205, 207 : 



Moss, 403 : Fern, 420 : limited growth 



of. 211 



Leaflet, Nitella, 207 

 Leg, Crayfish. 324 

 Lept'othrix aeirrds, slender : flpi'f , a hair), 



filamentous condition of Bacillus, 89 : 



Figure, 87 

 LeUC'OCyte (AevKos white : KV'TOS a hollow 



vessel, cell), a colourless blood corpuscle : 



structure of, in various animals 



(Figures), 57 : ingastion of solid par- 



