﻿DE. CHARLES DAVISON ON THE 



Nature of the Shock. 



[Feb. 1905, 



In the central part of the disturbed area, the shock consisted of 

 two distinct parts, separated by a brief interval of rest and quiet. 

 At Slawston, for example, the first and stronger part lasted 

 4 seconds, the interval 2 seconds, and the second part about 

 2 seconds ; the sound was also in two parts, the first and louder 



Map illustrating the area affected by the Leicester earthquakes 

 of June 21st, 1904. 





of Q— ■ 



00 Unci- Area 



being compared to thunder, the other dying away after the second 

 part of the shock, and resembling a rushing wind. Nearer the 

 boundary of the disturbed area, as, for instance, at Harrington, the 

 shock consisted of one continuous series of vibrations, 3 seconds in 

 duration, increasing in intensity to a single maximum and then 

 decreasing, and accompanied by a sound like the rumbling of a 

 passing waggon. 



The relative intensity of the two parts of the shock is given in 



9 records. At Queniborough or Queenborough, according to two 



observers, the parts were roughly equal in intensity ; at 7 other places 



Burton Hall, Kirby Muxloe, Leicester, Little Dalby, Lowesby, 



