246 Notes on the Recent Earthquakes [No. 123. 



this, I observed the water in the Canal was unusually muddy, and after 

 the shock was over I went to look, and found the water much disturbed 

 by a high swell, whether occasioned by the shock or not, I cannot 

 say." 



These details are unusually complete and interesting, and are very 

 creditable to Serjeant Renny's powers of observation. The unusual 

 muddiness of the Canal cannot possibly be due to the influence of the 

 Earthquake, since the direction in which the shock travelled was against, 

 not coincident with that of the current in the Canal, hence the distur- 

 bance of the silt in the bed could not precede the shock ; but it is quite 

 possible, that the high swell observed after the shock had passed, may 

 have been occasioned by it. The muddiness was probably caused by a 

 fall of rain in the upper part of the Canal. 



From Poojnah the shock travelled to Saharunpore, where it was just 

 felt, but attracted no particular attention. It was next experienced 

 at Kulsea, another station on the Doab Canal, fourteen miles to the 

 northward of Saharunpore, where its effects were very perceptible. 

 The motion here, as described to me by Mr. Sub- Conductor Pigott, 

 was of the same undulating character as at Kawulsur, but its duration 

 was certainly not more than a minute. Immediately on observing 

 the shock, Mr. Pigott ran to the sun-dial, and found it precisely noon, 

 or 12 o'clock. My camp was pitched about two miles north 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. 



By combining the preceding details, some interesting points may 

 be determined ; and first, as to the rate of progression of the undulations. 

 The maps I have had it in my power to consult, were not all so good 

 as I could have wished, and the distances mentioned may possibly be 

 a little incorrect, but not so, I believe, to any great extent. From 

 Jellalabad to Peshawur, measuring in a straight line across the spurs 

 of the Sufned Koh, the distance is 70 miles. From Peshawur to 

 Ferozepore, measuring similarly in a straight line, the distance is 

 280 miles, and from Ferozopore to Delhi 250, in all 600 miles. The 

 period of the shock at Jellalabad is not mentioned, but at Peshawur 



