DKcioio.r KUWADA.-A CTTOLOG. STUD. OF ORYZA SATIVA. 



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and later the bipolar structure (Fig. 15). The chromosomes^ 

 being caught by the spindle-fibres, are arranged at the equatorial 

 plate. In the polar view at this stage the number of gemini 

 was found always to be 12 (Text-fig. A. a). Geminial chromo- 



Text-fig. A. Polar view of chromosomes at' the equatorial 

 plate. X 2360. a, Heterotype division, b, Abnormal ease of 

 the same, 2 or 3 out of 12 chromosomes are especially small. 

 The side-view of the same is shown in Fig. 16. PI. VIII. c, d, 

 Divisions of somatic nuclei, e, f, Homotype divisions, g, 

 Sister chromosomes at anaphase of the same. 



somes soon separate and move toward the poles. As soon as 

 they reach the poles the new daughter-nuclei are organized, 

 which soon become ready for the second division (Fig. 17). 

 No resting condition of nucleus was found in the interkinesis. 

 The partition wall is formed and the daughter-cells are separated 



