HATE OF TRANSLATION OP THE WAVE. 



83 



the Topographical Survey Party engaged in the north Cachar hills 

 at the time, having been near the centre of the area shaken, and 

 having noted his chronometer time almost immediately on the occurrence 

 of the shock. The other observation is due to the circumstance that 

 the two astronomical clocks used at the Surveyor General's office in 

 Park Street, Calcutta, were actually stopped by the transit of the wave. 

 As the shock occurred on Sunday evening no one was at the office, and 

 we should have been without a careful record of the time, but for this. 

 The observed times of the shocks on the 10th of January at Asalu, 

 for which we are indebted to Major (now Colonel) Godwin-Austin, 

 are given in the table appended. 1 



The time at which the clocks of the observatory at Calcutta 

 were stopped was 4h. 43' 30". 



Synopsis showing observed Chronometer Times of Shocks of Earthquake of 10th January 

 1869, with the error and rate of Chronometer from observations made on 12th and 

 24th January 1869, together with corrected times of shocks, at Asalu, North Cachar 

 Mils. 





Computed 



Time of 



Observation. 



Observed 

 Chronome- 

 ter Times 

 of Shocks 



of Earth- 

 quake on the 

 10th Jan- 

 uary. 



Interval. 



tab 



.9 



'a 



tao 



n 



<8,f 



.2-3 



S3 



COBBECTIOIT 

 TO EBKOE 



oe Chrono- 

 meter eob 

 Interval. 





Date. 



In Hrs. 



Decimals 

 of Hrs. 



True Times 

 of Shocks 





Error of 

 chronome- 

 ter on 12 

 observation 

 + 1 14 18. 



cf Earth- 

 quake. 



12th January... 



H. m. s. 

 9 2 56*2 



H. m. s. 

 3 45 50 



3 46 10 



3 47 40 



3 58 30 



H. m. s. 

 41 17 6 



41 16 46 



41 15 16 



41 4 26 



H. 



41-285 



41-279 

 41-254 

 41-074 



D. 



CO o 



t~ II 



il =1 



S3 



o n 



w 3 



^Ph 



+ 



29-89 



29-89 

 29-89 

 29-74 



H. m. s. 

 .1 14 47-9 



1 14 47-9 



1 14 47-9 



1 14 47-7 



H. m. a. 

 5 37-9 



5 67-9 



5 2 27-9 



6 13 17-7 



( 83 ) 



