175 



The resulls of those experimenls speak also very much 

 in favour of (he assiini])tion thai rhythmic imj)uises of some 

 kind are ])assing Ihrouiih the refrencratiii^^ piece of tissue 

 in vitro and tliat [hvrv exists an iiilei'dependancy of the 



Zf' 



10 11 12 y IV 



Fig. 38. 



cell individuals on each other. In other words the explanled 



tissue seems to obey the laws of the physiological integrity. 



If the entire material from the series of exposures is 



collected, the total number of cases examined are 100 fTable 



pi 



» 2 

 Zeit 



9 10 11 12 13 n 15 If If 



Fig. 39. 



18). The photographs show^ an average of 37 peripnerial 

 cells in the field. In table 18 the frequency of mitotic cell 

 divisions on an average of 37 cells can be seen. The result 

 of these figures is, that an a v e r a g e of 2 o/o of the cells are 

 in mitotic division at a given moment. 



