MUSSOORIE-DEHRA DUN EPICENTRAL TRACT. m 



In the coolie lines partition walls running N. 60° E. fell, chiefly to 

 S. 30° E. 



_ , .„ Most of the damage has been repaired. The in- 



Rockville. m ° r 



cidence of the fractures points to motion in a N. — S , 

 line. 

 This consists of a number of large two or three-story buildings 

 enclosing a quadrangle. A good deal of general 

 damage has been done to walls and arches in the 

 south and west wings. 



Apparent direction of principal motion N. — S. 



In both of these buildings the corners of rooms are cracked, E. — W. 

 Abergeldie and walls have moved out to south, and N. — S. walls 

 ge display vertical fractures. 



The most reliable estimate is 6-10 a.m. recorded by Lieutenant 

 Time occurrence H. W. Kettle well, the Cantonment Magistrate. 



of shock. 



The intensity of the shock was probably about equal to that at 

 Character of shock, Mussoorie and Dehra Dun, or between 8 and 9 of 

 etc - the Rossi-Forel scale. Here, as at the above-men- 



tioned places, well-ouilt structures on good foundations, such as the 

 newer barracks, Rokeby, the .Kellog Institute, etc., escaped either 

 entirely or sustained merely trifling injury. 



Several persons noticed tremors lasting from 15 to 20 seconds both 

 before and after the chief shock. Estimates of the duration of the 

 latter vary from 15 to 60 seconds. One observer records the occurrence 

 of three distinct minor shocks within 5 minutes of the main shock. 



Lieutenant H. W. Kettlewell considers that the disturbance con- 

 sisted of violent lateral vibrations estimated at four to the second. 

 This view is supported by Major E. W. Allum. 



The chief direction of motion was apparently in a N. E.— S. W. 

 direction or at right angles to the general trend of the Landour ridge. 

 There is, however, a large amount of evidence of motion in other direc- 

 tions, and this can easily be understood if the impressions of the Reverend 

 J. S. Woodside are true ones. That observer states : — " The shock 



