NATURE OF FOCUS, DEPTH, ETC. 329 



as in the IV — V area. No sound has been generally recorded except 

 from certain localities in Assam and Eastern Bengal where it is probable 

 the shocks were of local origin and had nothing to do with the Kangra 

 earthquake. In spite of local variety in estimating this shock I think 

 we may say as a whole that the shock was hardly felt and not generally 

 felt except by people in favourable situations, and that it was fre- 

 quently only deduced from movements of bodies of water and other de- 

 licately poised or suspended articles. 



Notwithstanding its feeble character and its still more extended 

 front which must have reached four times the value given in the last area 

 before it was utterly lost to human sensibility, it is worth noting that 

 it became violently destructive at one place, namely, Ahmedabad, where 

 three 13^ inch masonry partitions in water-supply tanks fell to the 

 south owing to the height of the water being raised on the north side 

 first as the wave passed under them. (See p 250.) 



III.— NATURE OF FOCUS : DEPTH, ETC. 



On account of the tendency recently exhibited in the writings of 

 certain authors to view tectonic quakes of great 



\ a G VlQPilPG TOT fL 



complex near-the- violen.ce as due to a net- work or branch- work of 

 surface origin as a faults, not necessarily very deep in origin, and fre- 

 net-work to branch- quently attested and indicated bv actual surface 



work of faults. i j .' 



fissures, 1 it* may come as a surprise to many to be 

 assured that the Kangra earthquake presents no evidence at all in sup- 

 port of this view : not a single railway has recorded any damage to the 

 track, not a single road or path has been deflected, raised or lowered, 

 no rivers or streams have changed their courses or been temporarily 

 dammed up — except as due directly to landslips from slopes of such 

 great steepness that they might as easily have occurred after a heavy 

 torrential rain-storm. It is true there are no railways in the main 



1 Harboe — Erdbeben Linien (Beitage zur Geophysik, V. p. 20G.) See also : — 

 Hobbs — On some principles of Seismic Geology (Beitrage zur Geophysik, VIII, 2, 

 1907,\ 



