336 GLOSSARY 



Dispi'reme (see Spireme), that stage of mitosis in wliich eacli daugliter-nucleus 



has given rise to a spireme. (Flemming, 1882.) 

 Dy 'aster (8m?. two; see Aster. 2). the double group of chromosomes during the 



anaphases of cell-division. (FlemiMING, 1882.) 

 Egg-nucleus, the nucleus of the egg after formation of the polar bodies and before 



its union with the sperm-nucleus. Equivalent to the -female pronucleus'' of Van 



Beneden. (O. Hertwig, 1875.) 

 Enchyle'ma (eV. in; x"'^os, juice), i. The more fluid portion of protoplasm, 



consisting of "hyaloplasma." (Hanstein, 1882.) 2. The ground-substance 



(cvtolvmph) of cytoplasm as opposed to the reticulum. (Carnov, 1883.) 

 Biier'gid', the cell-nucleus together with the cytoplasm lying within its sphere of 



influence. (Sachs, 1892.) 

 Equatorial plate, the group of chromosomes lying at the equator of the spindle 



during mitosis. (Van Beneden. 1875.) 

 Erythro'philous (ipvOpo^, red; c^tAeu'. to love), having an especial affinity for 



red dves. (Auerbach.) 

 Ga'mete (ya/xeVr/, wife: yajxh-q^. husband), one of two conjugating cells. Usually 



applied to the unicellular forms. 

 G-em'mule (see Pangen). one of the ultimate supra-molecular germs of the cell 



assumed by Darwin. (Darwin. 1868.) 

 [Gre'noblasts] (ycVos, se.x ; /^Aacrros. germ), a term applied by Minot to the mature 



germ-cells. The female genoblast (egg, or '• thelyblast ") unites with the male 



(spermatozoon or •• arsenoblast ") to form an hermaphrodite or indifferent cell. 



(ATixoT. 1877.) 

 Germinal spot, the nucleolus of the germinal vesicle. (Wagner, 1836.) 

 Germinal vesicle, the nucleus of the egg before formation of the polar bodies. 



(PuRKiNjE. 1825.) 

 Germ-plasm, the same as idioplasm. (Weismann.) 

 Heterole'cithal (eVepos. different; AeKt^os, yolk), having unequally distributed 



deutoplasm (includes telolecithal and centrolecithal). (Mark, 1892.) 

 Heterotyp'ical mitosis (crepo?, different; see Mitosis), that mode of mitotic 



division in which the daughter-chromosomes remain united by their ends to form 



rings. (Flemming, 1887.) 

 [Holoschi'sis] (0A05. whole ; or_;^i'^eti/. to split), direct nuclear division. Amitosis. 



(Flemming, 1882.) 

 Homole'cithal (6/xo?. the same, uniform; AeKt^os, yolk), equivalent to alecithal. 



Having little deutoplasm, equally distributed, or none. (Mark. 1892.) 

 Homceotyp'ical mitosis (o/xoto?. like: see Mitosis), a form of mitosis occurring 



in the spermatocytes of the salamander, differing from the usual tvpe only in the 



shortness of the chromosomes and the irregular arrangement of the daughter- 

 chromosomes. (Flemming, 1887.) 

 Hy'aloplasma (ilaAo?, glass; TrXdafxa, anything formed), i. The ground-sub- 

 stance of the cell as distinguished from the granules or microsomes. [Hanstein, 



1880] 2. The ground-substance as distinguished from the reticulum or "spon- 



gioplasm." (Levdig, 1885.) 3. The exoplasm or peripheral protoplasmic zone 



in plant-cells. (Pfeffer.) 

 Hy'alosomes ( JaAo?. glass ; aw/xa, body), nucleolar-like bodies but slightly stained 



by eitlier nuclear or plasma stains. (Lukjanow. 1888.) 

 [Hy'groplasma] (vyp6<;, wet; TrAarr/xa. something formed), the more liquid part 



of protoplasm as opposed to the firmer stereoplasm. (Nageli, 1884.) 

 Id, the hypothetical structural unit resulting from the successive aggregation of 



biophores and determinants. Identified by Weismann as the chromomere, or 



chromatin-granule. (Weismann, 1891.) 



