67 



rounded cliroino somes, ri^o^a-^ly derived from the nucleolus, ap- 

 pe£xr in the nuclear cavity (fig. 131) . At the sai/ie time 

 the nucleus elongates further, and there is to "be seen a 

 kinoplasiaic ca,p at each end. A sidndle is organized as be- 

 fore, a,nd the 7 clxroiflosomes arrange themselves in an equa- 

 torial plate. The division of the t-.;o nuclei is syncliro- 

 nous, their soies of division lying at right angles to each 

 other (fig. 132) . At anaphase, two groups of 7 chroLiosoraes 

 pass to the jioles of each spindle, the nuclear mejahranes 

 disappearing (fig. 133) . At teloplia-se the cliroino somes of 

 each group \/hich is in close proxi.niity to the kinoplasmic 

 cap, fuse to form the nucleolus of the daugJiter nucleus. 

 A new nuclear ineiaorane is formed around each mass of cliro- 

 matin and the kinoplasm again hecomes distributed around 

 the nucleus (fig. 134) . 



The four nuclei thus formed lie very near tjie periph- 

 ery of the mother cell, and equidistant from one another 

 (fig. 115). Each is a definitive tetraspore nucleus. 

 Their arrangement in the cell is determined by the fact 

 that one nucleus alv/ays lies at the point from v/hich the 



cytoplasmic strand passes to meet the stalk cell. The 

 stj^uctui^e of the nucleolus at tliis st.ige is somev/hat dif- 

 ferent from that of the preceding stages. The cliromatin 

 mass is usually pl^dnly lobulated. 0\itside and near tliis 



