THE ORE AT EARTHQUAKE OF S. E.JAPAN 1/5 



of seismic activity from time to time and from place to place thus 

 giving a hint as to tlio prediction of the place of earthquake occur- 

 rence^\ It is, however, our deepest regret that he was unsuccessful 

 in predicting the last great Kvvanto Earthquake, notwithstanding 

 he had previously been criticized for his opinion relating to this 

 problem. (PI. XLV.) 



Further account of the topographical changes 

 acconi2>anying the great earthquake. 



So far I have described in the text the results of the soundings 

 and the land-surveys carried on respectively by the Naval Hydrography 

 Department and the Land Survey Department of the Military Staff, quite 

 startling changes in the topography of land and sea-bottom having been 

 thus brought to light. Perhaps it may interest my readers further if I 

 tell them of the results obtained recently by the Land Survey Department, 

 which is still continuing its work of exhaustive investigation of the 

 phenomena. 



Before going further, it will be convenient to recapitulate here 

 the work of surveying which has already been done or is in progress. 



1. The first series of the bench-mark surveys in the whole seismic 

 area. (See PI. XLVI.) The vertical com[)onent of the topographical change 

 at each station is shown in the plate by the figures (in metres) along 

 the bench-mark lines, the + or— assigned to the number indicating res- 

 jjectively elevation or depression. The work was carried on during the 

 time from Oct. 1923 to Nov. 1924. 



2. The repetition of the bench-mark survey on two lines, one 

 joining Tokyo to Misaki and the other, Hudisawa to Atami. This 

 was carried on during the three months from Jan. to March in 1925 ; 

 the results showed that the land, which had once risen so conspicuously 

 in the southern yAxt of Sagami, now showed a depression not greater 

 than 5 cm. when compared with the previous observations. This 

 result agrees fairly well with other observations showing that a partial 



2) Eiilletin of tlie Imj). Earthq. Tnv. Comm., Vol. II, pp. 1,10-143. 



