INDEX AND GLOSSARY 



491 



conception of a cell having been derived 

 from the walled plant-cell, -.—meaning of 

 term, 61 : minute structure of (Figure), 

 62 : varieties of (Figure), 57 



Cell-aggregate, meaning of term, 188 



Cell-colony :— temporary, Saccharomyces, 

 73 : permanent, Zoothamnium, 135 



Cell-division, 65 (Figure) 



Cell-fxislon 302, 419 



Cell-layer, 222, 273 



Cell-membrane or wall, 10, 27, 63 



Cell-multiplication and differentiation, 

 215 : Polygordius, 302 : Fern, 419 



Cell-plate, 67 



Cell-protoplasm, 62 



Cellulose, composition and properties of, 

 2S 



Central capsule, Radiolaria, 152 



Central particle or Centrosome (Ktvrpov, 

 centre : ai>ii.a., the body), 65, 261 (Fig- 

 ure) 



Ceph'alothor'ax (ic«(i>aAi), head : $u>pa(, 



breast-iilalc), Crayfish, 318 

 Cerebral ganglion. See Brain. 

 Cerebro-pleural ganglion. Mussel, 362 

 Cheliped (vtjA^, claws : irovs, foot), 323 

 Chlor ophyU (xAupos, green : <ttv\Xov, a 

 leaO, the green colouring matter of 

 plants, properties of, 26, 31 : occurrence 

 in Bacteria, 87 : in Hydra, 228 

 Chromatin (xpa»*o, a colour), the con- 

 stituent of the nucleus which is deeply 

 stained by dyes, 7, 63 : male and female 

 in nucleus of oosperm, 261 

 Chrom'atophore IxpuiiO; colour : if>iptit 

 to bear), a mass of proteid material im- 

 pregnated with chlorophyll or some other 

 colouring matter, 26, 46, iy7, 207, 228 

 Cbromosome (xpw/xa, colour : o-ufia body), 



65, 66, 261 

 Cll'ium {ciliuni, an eye-lash), defined, 

 3$Hote : comparison of with pseudopod, 

 34, 52 : absence of cilia in Arthropoda, 



327 



Ciliary movement, 25 : a form of con- 

 tractility, 33 



Clliate Infusoria, 107 



Circulatory organs, Polygordius, 282 : 

 Crayfish, 337 : Mussel, 360 : Dogfish, 



384 . . 



Classification, natural and artificial, 141 : 

 natural, a genealogical tree, 145 



Cnid'Oblast (kvCBxi, a nettle : ^Aacrrof , a 

 bud), the cell in which a nematocyst 

 (yr'.) is developed, 227 



Cnid'OCil (ici/i5ij and cilium), the " trigger- 

 hair " of a cnidoblast, 227 



CcBlenterata, the, 305 



CCBlome (xoiAu^a, a hollow), the body- 

 cavity : — Polygordius, 270 : Starfish, 

 306 : Crayfish, 335, 343 : Mus.sel, 355 : 

 Dogfish, 372 : development of, Poly- 

 gordius, 299 



OOBlom'ate, provided with a ooelome, 273 



COBlomlC epithelium. See Epithelium. 



COBlomlC fluid, Polygordius, 278 



Col'loidS (icoAAa, glue : ei£of , form), pro- 

 perties of 6 



Colony, Colonial organism, meaning of 

 term, 135, 234: formation of temporary 

 colonies. Hydra, 231 



Coliunella (a little column), 162 



Com mis sure Ucnmiissura, a band), 279 



Compound organism. See Colony. 



Concres cence (c'<>", together : crescv, to 

 grow), the un on of parts during growth 



Cone, an axis bearing sporophylls : — Equi- 

 setum, 436 : Selaginella, 444 : Gymno- 

 sperms, 452 



Conjuga'tlon (conjugdtio, a coupling), the 

 union of two cells, in sexual reproduc- 

 tion : — Amceba, ao : Hetrromita, 41 : 

 Paramoecium, 114: Vorticclla, 132: 

 Mucor, 165 : Spirogyra, 198 : of ovum 

 and sperm, 260 : moncecious and dice- 

 cious, 199 : comparison with plasmodium- 

 formation, 54 



Connective, oesophageal, 283, 341 



Connective tissue, 329. 369 



Contractile vac uole (vacuus, empty) :— 

 Amceba, 8, 16 : Euglena, 47 : Paramce- 

 cium. III 



Contractu ity {contractio, a drawing to- 

 gether), nature of, 10, 34 : muscular, 

 ■3° 



Contraction, physical and biological, 10 



Conus artinosus, 384 



Cork, 449 



Cork-cambium, 451 



Corolla (cdroUa, a little wreath), the 

 inner or distal whorl of the perianth in 

 the flower of Angiosperms, 464, 468, 471, 



^473 



Corpuscles. See Blood -corpuscles, and 

 leucocytes. 



Cortex, cortical layer (cortex, bark), 

 Floweiing plants, 59, 44S : Infusoria, 

 no, 126 



Cotton-wool as a germ-fitter, 99 



Cotyle'don (>corvAi;ii>»', a cup or socket), 

 the first leaf or leaves of the phyllula 

 (g.v.) in vascular plants, 427 



Cranium (Kpaviov, the skull), 374 



CRAYFISH :— Figure. 319: general charac- 

 ters. 314, 315 : limited number and con- 

 crescence of metamcres(Figure), 320 : ap- 

 pendages (Figure), ;ja2 : exoskeleton, 

 319: enteric canal (Figures), 322 : gills 

 (Figure), 318: blood-system (Figuie,) 

 335> 337 • kidney, 337 : nervous .system, 

 319 : Muscles (Figures), 327 : reproduc- 

 tive organs, 343 : development, 343 



Creation (creo, to produce), definition of, 

 141 : illustrated in connecton with species 

 of Zoothamnium (Diagram); 142 



Cross-fertilization : applied to the sexual 

 process when the gametes spring from 

 different individuals, 199 



