KOTES ON JxVl'ANESE EAETHQUAKES. 



407 



TABLE VII. 



Mean Seasonal Distrilaition of Earthquakes in Ja])an. 



TABLE VIIL 



Mean Semi-Annnal Distribution of EartlKjuakes in Japan.^ 



According to Table VI, the greatest monthly number 65.3 

 occurred in May, and tlie smallest numbers, varying between 

 41.7 and 45.4, in the months of Juno, July, August and Sep- 

 tember, the ratio of the maximum to the minimum being as 

 1.6:1. According to Table VII, the maximum seasonal number 



1) Eased on tlic eartlu|U;:ke nuuiljers given in Table VI for the months betweea 

 anuarv ISSo and October ISUl. 



