24 -Ä-rt. 5. — T. Teracfe, M. Isimoto and M. Imamura : 



Summary. 



1. The remarkable influence of topography on the distribu- 

 tion of precipitation is demonstrated with respect to the yearly as 

 well as the monthly amounts. 



2. A vector diagram method of investigating the different 

 relations of the precipitation with the barometric gradient is illust- 

 rated. 



3. The neccesity of taking the percentage values of the 

 precipitation is emphasized. 



4. The rainfalls in different districts are analysed in terms of 

 the topographical effects. It is shown that the effect is largely 

 determined by the component of the barometric gradient taken in 

 a direction a little inclined to the axial line of the land, as was 

 expected from the elementary theory proposed. 



5. A peculiar relation between the earthquake frequency and 

 the barometric gradient is pointed out. 



Published June iSth, 1919. 



