342 GLOSSARY 



Spi'reme (o-Treipryju-a, a thing wound or coiled ; a skein), the skein or "Knauel' 1 



stage of the nucleus in mitosis, during which the chromatin appears in the form 



of a thread, continuous or segmented. (FLEMMING, 1882.) 

 Spon'gioplasm (o-Troyyt'ov, a sponge; 7rAacr/>ta, a thing formed), the cytoreticulum. 



(LEYDIG, 1885.) 

 Ste'reoplasm (crrepeos, solid), the more solid part of protoplasm as opposed to the 



more fluid " hygroplasm." (NAGELI, 1884.) 

 Substantia hyalina, the protoplasmic ground-substance or "hyaloplasm." 



(LEYDIG, 1885.) 

 Substantia opaca, the protoplasmic reticulum or " spongioplasm." (LEYDIG, 



1885.) 

 Te'loblast (re'Aos, end; /^Aao-rds, a germ), large cells situated at the growing end 



of the embryo (in annelids, etc.), which bud forth rows of smaller cells. 



(WHITMAN, WILSON, 1887.) 

 Telole'cithal (re'Aos, end ; Ac'ictdos, yolk), that type of ovurn in which the yolk is 



mainly accumulated in one hemisphere. (BALFOUR, 1880.) 

 Te'lophases, Telokine'sis (re'Aos, end), the closing phases of mitosis, during 



which the daughter-nuclei are re-formed. (HEIDENHAIN, 1894.) 

 To'noplasts (TWOS, tension ; TrAcurro?, form), plastids from which arise the vacuoles 



in plant-cells. (DE VRIES, 1885.) 

 Trophoplasm (rpo^, nourishment; TrAaoyxa). i. The nutritive or vegetative 



substance of the cell, as distinguished from the idioplasm. (NAGELI, 1884.) 



2. The active substance of the cytoplasm other than the " kinoplasm " or 



archoplasm. (STRASBURGER, 1892.) 

 Tro'phoplasts (rpot^r;. nourishment; TrAacrros, form), a general term, nearly equiv- 



alent to the "plastids 1 ' of Schimper, including " anaplasts " (amyloplasts), 



" autoplasts " (chloroplasts), and chromoplasts. (A. MEYER, 1882-83.) 

 Yolk-nucleus, a word of vague meaning applied to a cytoplasmic body, single or 



multiple, that appears in the ovarian egg. [Named " Dotterkern " by CARUS, 



1850.] 

 Zy'gote or Zy'gospore (vyov, a yoke), the cell produced by the fusion of two 



conjugating cells or gametes in some of the lower plants. 



