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-fusion 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 



Cell'ulose, composition and properties of, 

 28 



Central capsule, Radiolaria, 152 



Central particle or Centrosome (itevrpov, 

 centre : aCo^a, the body), 65, 261 (Fig- 

 ure) 



Ceph'alOthor'aX (*e<J>aArj, head : 0u>paf , 

 breast-plate), Crayfish, 318 



Cerebral ganglion. See Brain. 



Cerebro-pleural ganglion, Mussel, 362 



Cheliped (xy^y, claws : TTOVS, foot), 323 



Chlor'ophyll (xAu>pos, green : <vAAov, a 

 leaf), the green colouring matler of 

 plants, properties of, 26, 31 : occurrence 

 in Bacteria, 87 : in Hydra, 228 



Chrpm'atin (xpw/u.a, 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 (xp>na, colour : <epw 

 to bear), a mass of proteid material im- 

 pregnated with chlorophyll or some other 

 colouring matter, 26, 46, 197, 207, 228 



Chromosome (XPWM<*, colour : o-w/ua body), 

 65, 66, 261 



Cil'ium (czY/'w/H, an eye-lash), defined, 

 2$note : comparison of with pseudopod, 

 34, 52 : absence of cilia in Arthropoda, 



Ciliary movement, 25 : a form of con- 

 tractility, 33 



Cil'iate Infusoria, 107 



Circulatory organs, Polygordius, 282 : 

 Crayfish, 337 : Mussel, 360 : Dogfish, 



Classification, natural and artificial, 141 : 

 natural, a genealogical tree, 145 



Cnid'oblast (KI/I^TJ, a nettle : /SAourros, a 

 bud), the cell in which a nematocyst 

 (?.z>.)is developed, 227 



Cnid'OCil (xi/iSr/and ciliuni), the " trigger- 

 hair" of a cnidoblast, 227 



Ccelenterata, the, 305 



COBlome (KoiAwjaa, a hollow), the body- 

 cavity : Polygordius, 270 : Starfish, 

 306 : Crayfish, 335, 343 : Mussel, 355 : 

 Dogfish, 372 : development of, Poly- 

 gordius. 299 



CkBlom'ate, provided with a ocelome, 273 



CcelomiC epithelium. See Epithelium. 

 Coelomic fluid, Polygordius, 278 

 Colloids (xoAAa, glue : elSos, form), pro- 

 perties of 6 



Colony, Colonial organism, meaning of 

 term, 135, 234 : formation of temporary 

 colonies, Hydra, 231 

 Columel la (a little column), 162 

 Com'miSSUre (comnissura, a band), 279 



Compound organism. See Colony. 



Concres'cence (cm, together : cresco, to 

 grow), the un on of parts during growth 



Cone, an axis bearing sporophylls : Equi- 

 setum, 436 : Selaginella, 444 : Gymno- 

 sperms, 452 



Conjugation (conjugdtio, a coupling), the 

 union of two cells, in sexual reproduc- 

 tion : Amceba, 20 : Hettromita, 41 : 

 Paramcecium, 114: Vorticella, 132: 

 Mucor, 165 : Spirogyra, 198 : of ovum 

 and sperm, 260 : monoecious and dioe- 

 cious, 199 : comparison with plasmodium- 

 formation, 54 



Connective, cesophageal, 283, 341 



Connective tissue, 329. 369 



Contractile vac'uole (vacnns, empty) :-- 

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

 cium, in 



Contractility (contracts, a drawing to- 

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

 130 



Contraction, physical and biological, 10 



Conus artinosus, 384 



Cork, 449 



Cork-cambium, 451 



Corolla (corolla, a little wreath), the 

 inner or distal whorl of the perianth in 

 the flower of Angiosperms, 464, 468, 471, 



Corpuscles. See Blood-corpuscles, and 

 Leucocytes. 



Cortex, cor'tical layer (cortex, bark), 

 Flowering plants, 59, 448 : Infusoria, 

 no, 126 



Cotton-WOOl as a germ-fitter, 99 



Cotyle'don (wrvXtfuav, a cup or socket), 

 the first leaf or leaves of the phyllula 

 (q.i>!) in vascular plants, 427 



Cranium (xpaviov, the skull), 374 



CRAYFISH : Figure. 319: general charac- 

 ters. 314, 315 : limited number and con- 

 crescence of metameres (Figure), 320: ap- 

 pendages (Figure), 332 : exoskeleton, 

 319 : enteric canal (Figures), 322 : gills 

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

 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 Zootha-mnium (Diagram}, 142 



Cross-fertilization : applied to the sexual 

 process when the gametes spring from 

 different individuals, 199 



