PI. XX. 



A, Graph showing the relation between seismic intensity at the alluvial 

 soil, to that at the diluvial one in Tokyo. 



6.0 



50 



•S 4-0 



0.6 07 0.8 0.9 i.o I.I 1.2 1.3 1.4 1.5 1.6 



StC. 



O Vokoami. (No. 6 in PL XVIII. 



—> Vibration period at the X Mikawatyo, Kanda. (No. 13) 



Seismological Institute. % Ettyuzima. (No. 2) 



^ Hasiba. (No. 7) 



B. Graph showing the relation between seismic intensity at the alluvial 

 soil to that at the tertiary ground in Kamakura. 



6.0 



5-0 



•S 4-0 



— I 1 1 1 1 1 1 



0.0 0.4 o.S 1.2 1.6 2.0 2.4 2.S 



sec. 



-^ Vibration period at the Seismological Institute. 



