«TUDIEiS OF REPRODUCTIVE ELEMENTS: II. ^07 



u'iJI l)e seen in tliese two finure.s :iiicl also in tiii'. 4. I'liis juirt of tlie 

 spindle is left behind after the coni[)]ete separation of the nuclei iu 

 the form of a small diagonal figure (Fig. 39 x). What becomes 

 of this figure is not ascertained. Fig. oö is drawn from preparations 

 of a specimen killed with picro-acetic acid and coloured with fuchsin- 

 methylen 1)1 ue. The archoplasm, and tlie central as well as the 

 radiatiny fibres are seen as in Fig. 3G, but some of the chromosomes 

 are here more or less swollen up, owing perha})S to the action of the 

 acetic acid. Fig. 35 A. is drawn from the same nucleus as that of 

 Fig. 35 but nt a level lower than that of the archoplasmic spin- 

 dle. It should be mentioned by the way that the spindle lies always 

 nearer the surface of tlie cell than to the nucleus. In both these 

 figures will be seen a number of narrow lines [)assing between the free 

 ends of the separating chromosomes, and qidte distinct from the 

 central fibres. These are the Verhimlumjsfäden of German authors, 

 whose origin is undoubtedly to be found in the ///u'/i- thread of the 

 nucleus. 



fhe difference we (observed, in the chromosomes in the case of 

 prophasis, betw^eeii the nuclei of the dividing individuals and those of 

 the spore-forming ones, is also here discernible. Fig. 48 represents an 

 individual in which the first two buds are just dividing; these are 

 seen more magnified in Fig. 48 A and B. In both of them the 

 nucleus i.s much elongated and dumbbell-shaped, with a large 

 archoplasm at each end. represented as usual by rough granulations 

 staining very deeply with aniline dyes. Scattered within the 

 swollen ends of the nuclei are seen many chromosomes, each of 

 which is distinctly discernible as a double row of minute micro- 

 .somes ; whereas in the nuclei of dividing individuals at al)out the 

 same stage, the chromosomes ccmsist of only a single row (compare 

 this figure with Figs. 35 and 36). In Fig. 48, A. in which the ob- 



