274 A CYTOLOGICAL INVESTIGATION OF SOME SPECIES 
were frequently indistinct. In fig. 54 a nuclear plate is seen, in which 40. 
elements were observed, one of these elements however, lying a little 
above the middle of the nuclear plate,was so faintly stained, that, while 
probable, it is not quite certain, that this element was a chromosome. 
The count of 16 metaphases gave once 37, four times 40, four times 
hestitation between 40 and 41 and seven times 41. The number 37 is 
certainly the result of faulty observation caused by an unclear prepa- 
ration. Remarkable is the frequency of the number 41 ; this is perhaps 
caused by the presence of univalent chromosomes; sometimes chromo- 
somes lagging behind are met with again in anaphase. 

Fig. 53. 
Fig. 53. Pollenmothercell of Batjan in diakinesis X 2300. 
Fig. 54. Nuclearplate of the heterotype division in Batjan X 2300. 
In all probability the haploid chromosomenumber of Batjan-cane is 
therefore 40 also. 
The reduction division in Bandjermasin hitam-cane 
In prophase the pairing of part of the chromosomes fails, almost al- 
ways,to occur.In diakinesis the chromosomes which were not united to 
gemini are again lying two by two together. In fig. 55 a nucleus with 
2 unpaired chromosomes and 39 gemini is pictured. The unpaired chro- 
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