i8 9 5. THE AFTER-SHOCKS OF EARTHQUAKES. 



393 



houses, walls, bridges, etc., were partially damaged ; in that of the 

 third, walls were cracked, clocks were stopped, and crockery fell off 

 shelves ; while between the third and fourth isoseismals the shock 

 was distinctly felt. The first of these areas, which includes the 

 provinces of Mino and Owari, and portions of those adjoining, is 

 mapped on a large scale in Fig. 2. The continuous lines marked 1 



Fig. 2. Area of First Isoseismal of Mino-Owari Earthquake. 



and 2 are isoseismal lines, along which the maximum accelerations 

 were respectively 2,000 and 800 mm. per second. The shaded area is 

 that which was shaken most strongly. The dotted lines will be 

 referred to in a later section [see p. 397). 



Within the shaded area will be noticed a somewhat sinuous line. 

 This marks part of the course of the great fault-scarp, which has been 

 admirably studied and described by Professor Koto. He succeeded in 



