GLOSSARY AT^Q 



Cen'trosome (Kevrpov, centre ; o-w/xa, body), a body found at the centre of the aster 

 or attraction-sphere, regarded by some observers as the active centre of cell- 

 division and in this sense as the dynamic centre of the cell. Under its influence 

 arise the asters and spindle (amphiaster) of the mitotic fi-nire (Boveim 

 1888.) 



Cen'trosphere. used in this work as equivalent to the " astrosphere " of Stras- 

 burger; the central mass of the aster from which the rays proceed and within 

 which Hes the centrosome. The attraction-sphere. [Stkasburger, 1892: 

 applied by him to the " astrosphere " and centrosome taken together.] ' 



Chloroplas'tids (xAwpoV green; TrAao-ro?, form), the green plastids or chlorophyll- 

 bodies of plant and animal cells. (Schimper, 1883.) 



Chromatin (xpw/xa, colour), the deeply staining substance of the nuclear network 

 and of the chromosomes, consisting of nuclein. (Fle.m.minc;. 1879.) 



Chro'matophore (xp^/xa, colour; -cf>6po^, bearing), a general term ai)plied to the 

 coloured plastids of plant and animal cells, including chloroplastids and chromo- 



plastids. (SCHAARSCHMIDT, 1880; SCHMITZ. 1882.) 



Chro'matoplasm (xpoifxa. colour; irkacrixa, anything formed or moulded), the sub- 

 stance of the chromoplastids and other plastids. (Strasrurger, 1882.) 



Chro'miole, the smallest chromatin-granules which by their aggregation form the 

 larger chromomeres of which the chromosomes are composed^ (Eisex, 1899.) 



Chro'momere (xpoj/xa, colour; /xepos, a part), one of the chromatin-granules of 

 which the chromosomes are made up. Identified by Weis.manx as the "id." 

 See Chromiole. (Fol, 1891.) 



Chromoplas'tids (xpoj/xa, colour ; TrAao-ro's, form), the coloured plastids or pigment- 

 bodies other than the chloroplasts, in plant-cells. (Schimper. 1883.) 



Chro'moplasts, net-knots or chromatin-nucleoli : also used by some authors as 

 equivalent to Chromoplastid. (Eisen, 1899.) 



Chro'mosomes (xpa>/xa, colour: o-w/xa. body), the deeply staining bodies into which 

 the chromatic nuclear network resolves itself during mitotic cell-division. ( Wal- 

 deyer, 1888.) 



Cleavage-nucleus, the nucleus of the fertilized Qgg, resulting from the union of 

 egg-nucleus and sperm-nucleus. (O. Hertwig, 1875.) 



Cortical zone, the outer zone of the centrosphere. (Van Benedex, 1887.) 



Cyano'philous (kwi/os, blue; ^lAetv, to love), having an especial affinity for lilue 

 or green dyes. (Auerbach.) 



Cy'taster {KvTo<i, hollow (a cell) ; do-XT/p, star), the same as Aster, i. See Kary- 

 aster. (Flemming, 1882.) 



[Cy'toblast] {kvto^, hollow (a cell); ^Aacrro's, germ). i. The cell-nucleus. 

 (ScHLEiDEN, 1838.) 2. One of the hypothetical ultimate vital units (bioblasts or 

 '" granula '') of which the cell is built up. (Altmaxx, 1890.) 3. A naked cell 

 or "protoblast." (Kolliker.) 



[Cytoblaste'nia] (see Cytoblast), the formative material from which cells were 

 supposed to arise by •• free cell-formation." (Schleidex, 183S.) 



[Cytochyle'ma] {KVToq, hollow (a cell) ; x^'^o? J*^''^'*^)' ^'^*^ ground-substance of the 

 cytoplasm as opposed to that of the nucleus. (Strasrurger, 1882.) 



Cy'tode {KVTo<ij hollow (a cell) ; €1809, form), a non-nucleated cell. ( Hackee, 1866.) 



Cytodie'resis {KvTo<i, hollow (a cell) ; SLatpeai'i, division), the same as Mitosis. 

 (Hexxeguy, 188?) 



Cytohy'aloplasma (kvtos, hollow (a cell) ; vaAo9. glass ; irXaafia. anything t"ormed), 

 the substance of the cytorcticulum in which are embedded the microsomes: 

 opposed to nucleohyaloplasma. (Strasrurger. 1882.) 



Cy'tolymph {kvto<;. hollow (a cell) ; lympha, clear water), the cytoplasmic ground- 

 substance. (Hackee, 1891.) 



