1843.] Memoir on Indian Earthquakes. 273 



were very perceptible. The motion here, as described to me by Mr. 

 Sub- Conductor Pigott, was of the same undulating character as ob- 

 served throughout, but its duration was certainly not greater than one 

 minute. Immediately on perceiving the shock, Mr. Pigott examined 

 the sun-dial, and making a slight allowance for the error of the dial, 

 and that for the longitude of the spot which has not been determined, 

 the true period appears to have been very nearly Oh. 03m. 44s. p. m. 

 Jellalabad time. 



My camp was pitched about two miles North-west of Kulsea on the 

 South bank of the Nowgong Row, (or stream,) but so feeble was the 

 intensity of the shock, that although I was conscious of some peculiar 

 motion at the time, it never occurred to me that it arose from an 

 Earthquake, and it had passed from my mind till recalled by Mr. 

 Pigott's account of what had been felt at the same time at Kulsea. 



Mussoorie, in lat. 30° 30', long. 78° 10'*, forms the most easterly 

 limit of the Earthquake of the 19th February, in so far as my informa- 

 tion extends. A merely incidental notice, in a Meteorological Register 

 kept by Major Aitchison at Mussoorie, informs me of its having been 

 experienced there. The shock, however, appears to have traversed a 

 large portion of the Himalayan chain, since I am informed by Capr. 

 Hutton, that it was felt at Shalkur on the borders of little Thibet, by 

 Lieut. D. Cunningham of Engineers. 



It therefore appears from the preceding details, that the tract affect- 

 ed by this Earthquake is, so far as determined by authentic intelligence, 

 extended from the 69th to a little beyond the 78th meridian of East 

 longitude, and from between the 34th and 35th to between the 28th 

 and 29th parallels of North latitude. The superficial area thus affected, 

 amounts to nearly 216,000 square miles, and within it are included 

 mountain masses of great extent, varying from 2 or 3,000 to 10 and 

 1 2,000 feet in height above the level of the sea. 



The general course of the shock was from East to West, parallel 

 with that of the range of the Himalayas. Its mode of propagation 

 appears to have been analogous to that of the waves generated when a 

 flexible piece of metal or other substance is seized at one extremity 



* The geographical positions of places in India are taken from the tahle of lati- 

 tudes and longitudes published in Rushton's Gazetteer. They are not always 

 strictly correct. 



2 o 



