In the latter half of this period the seismology in Japan was so much affected by the war that retrogressions in the instrumental seismology became very remarkable. Much regretted three leading seismologists, professors Ishimoto, Sezawa, and Inamura died in this period. But the seismic activities in this well-known land of earthquakes were not less active than usual as will be seen in the annexed table of destructive earthquakes. Seismologists in this country are now endeavoring to restore its former prosperity in this bitter circumstance.