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archosome is to conduct the development and evolution of the 

 fibers of the mitotic figures. The function of the accessory 

 archosomes is to conduct the formation of the contractile fibers 

 and perhaps furnish material for their construction. They 

 also conduct the " fiber cones." 



The location of the archosome is variable ; it is sometimes 

 situated in the granosphere, but is at other times found outside 



FIG. 4. An auxocyte in the beginning of the anaphase. Only a few of the chromosomes are 

 indicated. At each pole there are one and two archosomes and three and four accessory 

 archosomes. The chromosomes contain chromioles suspended in chromoplasm. At the apex 

 of each chromosome there is seen a chromoplast with endochromatic granules. To the right 

 and left in the cell are seen agglomerations of plasmosphere indicating the position of the new 

 cell wall, which is to separate the two daughter-cells. The chromosomes are seen to be con- 

 nected with the chromiole by contractile fibers, the latter consisting of granules enclosed in a 

 common sheath. The spindle fibers as well as the polar fibers start from the centrosphere. 



of it. The accessory archosomes are of the same structure as 

 the archosome, and one of the former may assume the func- 

 tion of the latter. 



The accessory archosomes, if too numerous, are expelled 

 from the cell, and then become paracellular bodies. Similarly, 

 parts of the spheres are also expelled from the cell. 



The nucleus contains the following more or less distinct 



