OP THE VELOCITY OP MOTION OP THE WAVE-PARTICLE. 71 



northern bank is marked as "much broken " or " great slips here," similar 

 notes are placed against only two places on the southern bank ; doubtless 

 the bank was cracked in many places, but only in two sufficiently to 

 deserve notice. These two spots have, both of them, land to the north, 

 so that the clays had time to take up a certain amount of horizontal 

 velocity, and the breakage and Assuring were certainly greatest near tbe 

 bazaar, to reach which the shock would have to travel the whole length 

 of the peninsula. Elsewhere, where the shock struck directly on to the 

 southern bank, the ground is not fissured or but slightly so, showing that 

 there the upper clays have not been able to take up at once any great 

 amount of lateral motion, the lower clays at first slipping under the 

 upper, but gradually more and more of the lateral motion is transmitted, 

 till at last they move once more, appreciably as one mass. 



I have put forward these ideas to try and account for the anoma- 

 lously high angle of emergence, as shown by the Police guard at Silcbar ; 

 but having propounded them here, I shall refer once more to this subject 

 in the next chapter. 



CHAPTER VI. 



OF THE VELOCITY OF MOTION OF THE WAVE-PARTICLE. 



The same causes which produced a paucity in the quantity of 

 evidence from which we might obtain information as to the other main 

 points of interest in connection with this earthquake have also affected 

 this of the velocity of wave-particle. Fortunately, however, the evidence 

 obtained at one station, that of Silchar, is unequivocal and, as giving a 

 near approximation to the velocity of wave-particle, valuable. 



The first piece of evidence which we will examine is that afforded 

 by the overthrown gate-piers of the cemetery, and we will at present 

 confine our attention to the cap of the eastern pier. This, as explained 

 at p. 7, and as may easily be seen by an inspection of the plan, PI. IX, 

 fig. 2, has evidently been shot off the top of the pillar, and showed no traces 

 of having been shifted from the position in which it originally fell, this 



( 71 ) 



