136 A CYTOLOGICAL INVESTIGATION OF SOME SPECIES 
sees however, that here the chromosomes proceed regularly towards 
the poles, none lagging behind. 
Fig. 31 and 32 show anaphases of Ardjoeno viewed from a pole. In 
both cases the two groups of chromosomes were present in the same 
section. Each group contained 40 chromosomes, none lagged behind. 
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Fig. 31. Fig. 32. 
Fig. 31. Anaphase of the heterotype of Ardjoeno seen from one of the poles 
x 2300. 
Fig. 32. Another case of anaphase of the heterotype of Ardjoeno seen from one of 
the poles x 2300. 
The fact, that in the anaphase of these cells twice 40 chromosomes 
are present proves conclusively, that in these cells 40 gemini were pre- 

Fig. 33: 
Fig. 33. Three pollen-tetrads of Ardjoeno x 1750. 
sent in diakinesis and metaphase, so that the diploid chromosome num- 
ber must be 80. 
The anaphase of Ardjoeno is followed by a telophase corresponding 
completely to the one of G. G. N. G. pictured in fig. 45. The chromoso- 
