4 Art. 5. — T. Terada; M. Isimoto And M. Imamnra : 



lY. Nuniaclu, Hamamatu and Nagoya, the central Pacifie 

 coast. 



V. Sakai, Hamacla and Hakuoka, the Southern Japan Sea 

 coast. 



VI. Kôti, Mij'^azaki and Kagosima, the Southern Pacific 

 coast. 



The distribution of the stations are shown in Fig. 1. 



The choice of the stations may seem somewhat arbitrary, but 

 we were led to it by different subsidiary considerations. 



In some stations, the observations were interrupted once or 

 twice during the interval of eighteen years taken. In order to fill 

 up the gap, the following procedure was taken. When the amount 

 of precipitation is wanting for a certain year at a given station, the 

 ratio of the mean amount for the remaining seventeen years for 

 the other stations in the same group to that of the station in 

 question was taken and multiplied to the mean value of the year 

 concerned of the other stations and the result was assumed as the 

 reduced value to Ije replaced for the wanting data. 



Though the annual amounts of precipitation recorded in 

 Kisyô-3'ôran are given in mm. and its fractions so that the numbers 

 are made up of five figures, it was considered convenient and 

 rather reasonable for the present purpose to cut the figures to only 

 three, stopping at the place of cm. 



The data thus reduced are given in Table I. 



