The cell in development and inheritance . rish, like the polar bodies. The numerical corre-spondence between the rejected nuclei or corpuscules de rebut hasalready been pointed out (p. 227). Hertwig could not count the chro-mosomes with absolute certainty, yet he states (89) that in Parai)ioe-cinm ca?cdatum, during the final division, the number of spindle-fibresand of the corresponding chromatic elements is but 4-6, while in the 1 Cf. p. 312. 2 Sala (94) and Fiirst have shown that occasionally the polar spindles of Ascaris areprovided with large typical asters, and thus resemble those of anne
The cell in development and inheritance . rish, like the polar bodies. The numerical corre-spondence between the rejected nuclei or corpuscules de rebut hasalready been pointed out (p. 227). Hertwig could not count the chro-mosomes with absolute certainty, yet he states (89) that in Parai)ioe-cinm ca?cdatum, during the final division, the number of spindle-fibresand of the corresponding chromatic elements is but 4-6, while in the 1 Cf. p. 312. 2 Sala (94) and Fiirst have shown that occasionally the polar spindles of Ascaris areprovided with large typical asters, and thus resemble those of annelids or mollusks. Salabelieved this to be an effect of lowered temperature, but Fiirsts observations are unfavour-able to this conclusion. 2/8 REDUCTION OF THE CHROMOSOMES earlier divisions the number is approximately double this (8-9). Thisobservation makes it nearly certain that a numerical reduction ofchromosomes occurs in the Protozoa in a manner similar to that ofthe higher forms ; but the reduction here appears to be deferred until. \ ,^~^f
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1902
