32 On the Distribution of Cyclonic Precipitation in Japan. 



the better uiiclerstanding of the coniphcated rain problem. The 

 discussions refer to different ideal cases, underlying several artificial 

 simplifying conditions. Above all, the assumption is made that 

 the thermal conditions are prescribed independent of the cyclone, 

 and the secondary disturbances both thermal and topographical due 

 to the cyclone itself, are entirely put out of account. The latter 

 disturbances may in some cases modify the resultant effect of the 

 other primary factors in no small degree. Still, we are inclined to 

 believe that the above way of analysing the complicated influences 

 in these principal factors may in many cases facilitate a better 

 understanding of the phenomena of cyclonic rainfall, and if pro- 

 perly understood and applied may be utilized for the purpose of 

 Aveather prediction. 



In conclusion, we wish to express our best tlianks to Prof. T. 

 Okada of the Central Meteorological (observatory for many valu- 

 able informations. 



PubUshed January 27th, 1916. 



