INDEX AND GLOSSARY 



401 



Inflores'cence (floresco, to begin to 



flower), an aggregation of cones or 



flowers, 369 



Infusoria (so called because of their fre- 

 quent occurrence in infusions), 105 

 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, 58 

 Insola'tion (insolo, to place in the sun), 



exposure to direct sunlight, 92 

 Integ'ument (integiimen.tum, a covering) 



of megaspore : Gymnosperms, 372 : 



Angiosperms, 378 

 Inter-cellular spaces, 343 

 Inter-muscular plexus (n-Ae'icw, to twine), 



284 

 Internode (inter, between : nodus, a 



knot), the portion of stem intervening 



between two nodes, 206 

 Interstitial (attersttfium, a space be- 

 tween) cells. Hydra, 225 : growth, 



Spirogyra, 196 

 Intestine (intcsttnns, internal), part of 



the enteric canal of the higher animals, 



276 

 IntUS-SUSCep'tion (in/us, into : suscipio, 



to take up), addition of new matter to 



the interior, 13 

 Iodine, test for starch, 27 

 Irritability (irritabllis, irritable), the 



property of responding to an external 



stimulus, 10 



Jaws: Crayfish, 311 : Dogfish, 325 



K 



Karyokinesls (napvov, a kernel _or_ nu- 

 cleus : /ciVrjcri?, a movement), indirect 

 nuclear division, 65 



Katab'olism (/cara^o^, a laying down), 

 18. See Metabolism, destructive. 



Kat'astateS ((caTa.on-TJi'ai, to sink down), 

 1 8. See Mesostates, katabolic. 



Kidney : Crayfish, 314 : Dogfish, 326 



LAMINARTA (lamina, a plate), 201 



(Figure), 202 



Labial palps, Mussel, 318 

 Larva, the free-living young of an animal 



in which development is accompanied by 



a metamorphosis, 295 

 Larval stages, significance of, Polygor- 



dius, 297 

 Leaf, structure of: Nitella. 206, 207, 



212 : Moss, 331 : Fern, 340, 348 : limited 

 growth of, 207 



Leaflet, Nitella, 207 



Lept'othrix(A.e7TT09, slender : 0pif, a hair), 

 filamentous condition of Bacillus, 88 : 

 Figure, 86 



LESSONIA (after Lesson, the French 

 naturalist), 202 (Figure) 



Leuc'OCyte (Aev/<o's, white : KVTOS, a hollow 

 vessel, cell), a colourless blood corpuscle : 

 structure of. in various animals 

 (Figures), 57 : ingestion of solid par- 

 ticles by, 58 : fission of, 58 : formation 

 of plasmodia by, 58 



Leuwenhoek, Anthony van, discoverer 

 of Bacteria, 95 



Life, origin of. See Biogenesis. 



Life-history, meaning of the term, 43 



Lignin (lignum, wood), composition and 

 properties of, 345 



Linear aggregate, an aggregate of cells 

 arranged in a single longitudinal series, 1 86 



Linnaeus, C., introducer of binomial no- 

 menclature, 8, 137 



Liver, Dogfish, 325 



M 



MACROCYST'IS (/aa*po'?, long : KU'OTIS, a 



bladder), 202 

 Mad'reporite (from its similarity to a 



jiiadrepore or stone-coral), 307 

 MAGOSPHJER'A (nayos, magical : 



o-<aipa, a ball), 262 (Figure) 

 Mantle, Mussel, 316 

 Manub'rium (manubrium, a handle) of 



Medusa, 239 



Matura'tion of ovum, 255, 257 

 Maximum temperature of amoeboid 



movements, 21 



Medulla or medullary substance (me- 

 dulla, marrow) : in Infusoria, 108 



Medus'a (Me'ou<ra, name of one of the 

 Gorgons), the free-swimming reproduc- 

 tive zooid of a hydroid polype, 237-240 : 

 derivation of a, from hydranth (Figure), 

 238 



Medus'oid, a reproductive zooid having 

 the form of an imperfect Medusa, 

 Diphyes, 249 



Meg'agam'ete (^eyas, large : -yayaew, to 

 marry), a female gamete (q.v.) distin- 

 guished by its greater size from the male 

 or microgamete, 130 



Meg'asporan'gium (fj.>iyag, large : an-opa, 

 seed : ayyelov, a vessel), the female 

 sporangium in plants with sexually di- 

 morphic sporangia, usually distinguished 

 by its greater size frorn the male or 

 micro-sporangium : Salvinia, 364 : Sela- 

 ginella, 367 : Gymnosperms, 372 : Angio- 

 sperms, 378 



D D 



