AND SPECIES HYBRIDS WITHIN THE GENUS SACCHARUM 133 
after that with the reduction division of F idji, Batjan and Bandjerma- 
sin hitam. Finally a case of division of PMC will be described, in which 
one can no longer with propriety speak of a reduction division. 
The regular reduction division of the PMC of Ardjoeno-cane. 
When the division of the PMC in this cane proceeds normally, 40 
chromatine-elements are present during diakinesis. The figures 26 and 
27 represent nuclei of this type. One sees that both nuclei are distinctly 
smaller than those of glagah, compare f. i. fig. 12 and 13. 

Fig. 26. 
Fig. 26. Diakinesis of Ardjoeno x 2300. 
In fig. 26 the bivalent nature of many chromosomes is clearly seen, 
not in all of them however, especially not in some which are pictured 
close to the side of the nucleus. As in the case of glagah the nucleolus 
of sugarcane can hide one or more chromosomes. In this nucleus the 
nucleolus also provides difficulties; in the drawing three chromosomes. 
overlapping one another are drawn slightly below this body, while the 
nucleolus covers 3 chromosomes, all of which however are discernable. 
In fig. 27 the bivalent nature of pretty nearly all the chromosomes is 
observable ; below the nucleolus a chromosome is situated which is but 
partly visible. Far to the left, a little below the middle of the figure a 
bivalent chromosome lying in a high level covers one on a lower level 
