Plate V 



No. 9 Living staminal hair cells of Tradescantia virginica. X 900. From Belar' (/) and (2) 

 In interphase. (3) and (4) One cell in early prophase; (4) 35 minutes later than (3). (5) 

 and (6) One cell in later prophase. Nucleoli still present. (6) is 60 minutes later than (5). 

 (7)_(;0) One cell in metakinesis (stage of formation of metaphase plate). (8) is 28 minutes, 



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