PLATE 



EXPLANATION OF FIGURES 



Figs. 10 to 15, 17, 18, Schaud.; fig. 16, wk. Flem. 



10 to 17 Prophases; fig. 18, apparent division of chromatic margin of undu- 

 lating membrane. Figs. 10 and 11, early granular stage in the formation of the 

 new chromatic basal rod. Figs. 12 to 15 and 17, six double split chromosomes 

 besides the caryosome which gradually loses its staining capacity. Fig. 16, new 

 chromatic basal rod together with the parabasal body. Fig. 17, budding of a 

 small new blepharoplast to which the new chromatic basal rod is attached. 



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