260 Memoir on Indian Earthquakes. [No. 136. 



are tracts occasionally subject to such shocks, and I would solicit the 

 co-operation of observers under whose notice they may come.* 

 This Memoir will be divided into the four following parts : — 



I. Register of Indian Earthquakes for the year 1842. 



II. Historical Summary of Indian Earthquakes, with some remarks 

 on the general distribution of subterranean disturbing forces through- 

 out India and its frontier countries. 



III. Analysis of the phenomena of Indian Earthquakes, as exhibited 

 in the two preceding parts. 



IV. Remarks on the points to be observed during Earthquake 

 shocks, and on the means of making the requisite observations. 



Part. I — Register of Indian Earthquakes, during the year 1842. 



1. Jellalabad Earthquake of the 19th February, 1842. 

 My attention was first prominently attracted to the subject of 

 Earthquakes in India, by the occurrence of that of the 19th of Febru- 

 ary last. A few brief and imperfect notes founded upon the details 

 I was able to collect, were published in the Journal of the Asiatic 

 Society and my object then was, more to direct attention to the sub- 

 ject of Earthquakes in general, than to furnish rigidly accurate conclu- 

 sions on this case in particular. Such conclusions were indeed 

 incompatible with the nature of the information furnished me, and 

 I have subsequently ascertained, that many corrections of these are re- 

 quisite. Yet the notes have fully answered their design, and have led 

 to my procuring much information, which, had they not been published 

 even with all their imperfections, would certainly have been lost to 

 science. From the date of the Earthquake my register was com- 

 menced, and it is my intention to continue it regularly, publishing it at 

 yearly intervals. I have some recollection of two Earthquakes having 

 been experienced in Delhi during the month of January 1842, but 

 unfortunately I did not record them at the time, my register not being 

 then commenced, and I have been unable since to verify this im- 



* All communications on the subject of Earthquakes in India may be addressed to 

 the author at Seharunpore, North-western Provinces, Bengal, or if preferred, to the 

 Secretary to the Asiatic Society, Calcutta, or to any of the public papers. 



