170 -A. Imamdra 



B.). No, 11 originated near Hakone and no. 23 in a belt running 

 from west to east in the central part of 8agami Province ; in many 

 respects they were similar to each other, having both been semi- 

 destructive in the province of Sagami. Casualties in the latter case 

 numbered 1273 collapsed houses and 14 victims. Lastly, no. 18 

 was felt very severely in Oosima, especially in the southeastern 

 part, where the intensity rather surpassed that of the main shock. 



From the same table, it is clear that the after-shocks in the first 

 day originated mostly in the district A, while those originating in the 

 district B took place for the most part after the occurrence of no. 12, the 

 great earthquake of the next day. This correlation is more clearly 

 shown in Table VI, in which four-hourly numbers of the after-shocks 

 are given. All these earthquakes are limited to those which gave 

 bodily feeling at Tokyo, the magnitudes represented by Koman numerals 

 III, II or I corresponding to earthquakes in which the double amplitude 

 exceeded 3 mm., or was greater or less than 1 ram. respectively. The 

 frequency of the sliocks or rather earthquake sounds which occurred 

 in Tokyo and its environs attained its climax on the third day, but 

 in general their occurrences were comparatively irregular. 



The frequency variation in each district may be studied mon; 

 closely from Table VII, in which 24-hourly numbers are given, begin- 

 ning at noon on Sept. 1. According to Mr. Yasuda, the numbers of 

 earthquakes felt at Tokyo during October and the three months following 

 were 96, 86, 139 and 167 respectively. The revival of seismic activity 

 in the last two months is due to the occurrence of many minute local 

 shocks in the northern part of Sagami in December an 1 of the after- 

 shocks of the large earthquake of Jan. 15, 1924. Since then, it has 

 become rather quiet except for the months of August and September, 

 1924, and now the people of Tokyo, Yokohama, and other places in the 

 vicinity are enjoying the usual tranquility from seismic activity 

 peculiar to their district, namely two shocks a week on the average. 



22. Rehabilitations and prospects. According to the authorities 

 on statistics, the total destruction of property caused by the shock as 

 well as its subsequent fire amounted to 5,500,000,000 yen ; a destruc- 

 tion too great to be restored within a few years or even a decade. The 

 peoi)le of the devastated cities and towns wandercil about in distress 

 for two or three days; however, they soon began to return to their 

 usual occupations and, somewhat encouraged by sympathy given to thenj 



