PLATE 5 



EXPLANATION OF FIGURES 



Polar view from metaphase stages from connective tissue cells 

 52 In late prophase 



57 The upper pole shows 43 chromosomes. Though the count is not cer- 

 tain there are at least as many chromosomes as figured. Since there are this 

 number it is evident that the fragments must divide. The lower pole shows 

 but 36 chromosomes but it was turned at an angle which made accurate drawing 

 impossible. 



210 



