Art. 6.— T. Terada 



3 ■. _ 



each year was counted. The 

 difference of the number of 

 the maxima minus that of the 

 * minimum was then plotted on 

 figs. 4, 5, 6 which refer to 

 faculae. Similar diagrams refer- 

 red to spots show quite similar 

 aspects. It was seen that the 

 ' Class II' is similar to Class I for 



the small value of JV+S and 

 rather resembles Class II for 

 the large value of it, suggesting 

 that Class 11' is a mixed type of 



j;^ I and II. 



On the other hand, the 



yearly deviations from the 



mean of the number of stations of each class showing maximum 



or minimum were treated similarly. For Class I and II, the 



results are such as could be expected from the above. For Class 



24 



t£i: 



Fig. 6. Class 11'. 





(2. » 

 ill 



Fig. 7. Number of stations witli 

 maximum frequency. 



Fig. 8. Number of stations with 

 minimum frequency. 



