982 Memoir on Indian Earthquakes. [No. 156. 



attaching undue importance to the cases brought forward I may yet 

 remark that the point is one well worthy of attention and investiga- 

 tion by better qualified parties. 



9. Concluding Remarks. 



Having now grouped as well as circumstances will allow, the vari- 

 ous phenomena of Indian earthquakes, there remain only a few gene- 

 ral remarks to conclude this part of the subject. 



a. It will doubtless have been remarked that the localities subject 

 to earthquake shocks, are characterised by certain features of general 

 resemblance. In most, indications of volcanic action, of violent disturb- 

 ing forces producing rents and fissures in the crust of the earth, of con- 

 nection between the surface and interior of the earth, have been found. 

 These features coincide with those of localities similarly affected in 

 other parts of the world, and maintain that general analogy between 

 earthquake tracts which has more than once been adverted to. 



b. Of the earthquake tracts of India some are situated close to the 

 ocean, others are removed from all connection, at least all external 

 connection with it : this point is noticed because it has been thought 

 by some that the presence of sea water is essential to the generation 

 of the disturbing forces to which earthquakes are due. The central 

 and lateral Himalayan tracts can scarcely have any connection with 

 the ocean, removed as they are so far from it, and yet in these tracts, 

 earthquakes of the utmost severity have been experienced. 



c. The last peculiarity to be noted is the local nature of Indian 

 earthquake tracts. Shocks occur in each of these with entire inde- 

 pendence of the others, shewing that the forces operating in each are 

 of local and limited extent. This circumstance is irreconcileable with 

 the idea that earthquakes are due to the movement of a general fluid 

 nucleus in the interior of the earth, it rather indicates that at various 

 depths from the surface, reservoirs of materials, whether gases, fluids, 

 or both, capable of generating disturbing forces exist, and that these 

 reservoirs under ordinary circumstances act independently of all 

 others. 



To present at one view the contents of this part, the following 

 tabular statement has been prepared. 



