THE GREAT EARTHQUAKE OF S. E. JAPAN 159 



develop into a volume not less tlian one million cu.m., and ran down 

 the whole com'se within five minutes, while the earth was still in 

 motion (PI. XLI.). 



The most remarkable phenomenon of this kind, however, is the 

 upheaval of land which showed itself along the coast of the disturbed 

 area (PI. XV ). The bench-mark survey undertaken soon after the 

 catastrophe by the Land Survey Department of the Imp. Military Staff 

 has fnrnished us with the following results. 



1. In the city of Tokyo, subsidence of less than 5 cm. has 

 taken place to the west of the River Sumida, and of 38, 

 28 or 35 cm. to the east of it. 



2. In the Boso Peninsula, upheaval has taken place generally, 

 namely, 8 cm. at Hunabasi, 11 cm. near Tiba, 15 cm. 

 near Yawata, 39 cm. near Kisaradu, 69 cm. near Hnttu, 

 91 cm. near Sanuki, 121 cm. near Takeoka, 134 cm. 

 near Katiyama, 157 cm. in Hodyo, 182 cm. in Kokonoe, 

 99 cm. at Kamogawa, 47 cm. at Kominato, 28 cm. 

 at Katuura, 26 cm. at Itinomiya, 21 cm at Mohara, 16 

 cm. at Ooami, and 11 cm. at Narito. 



3. South of Tokyo, upheaval is first noticed near Kawasaki 

 and continues as follows ; 10 cm. near Yokohama, 70 

 cm. near Hudisawa, 85-90 cm. in Kamakura, and 139 

 cm. at the tidegauge station of Aburatubo in Misaki. 



4. From Hudisawa to the west and then to the southwest 

 along the coast, upheaval has taken place as follows ; 

 105 cm. in Tigasaki, 182 cm. at Ooiso, 201 cm. near 

 Umesawa, 188 cm. at Kodu, 121 cm. near Odawara, 72 

 cm. near Manaduru, 10 cm. near Atami, 14 cm. near 

 Aziro, and 5 cm. in Ito. 



5. West of Tokyo, depression has taken place as follows ; 

 20 cm. at Hutyu, 27 cm. at Hatiozi, f)^ cm. at Kobo- 

 togetoge, 39 cm. near Uenohara, and 14 cm near 

 Sasagotoge. 



6. South of Ito down to Simoda, almost no change of level 

 was observed. 



7. West of Atami, over the volcanic district down to Numadu, 

 only a very slight change not greater than 5 cm. was 

 observed. 



The above data were obtained under the assumption that the 



