S MIDDLEMISS : KANGRA EARTHQUAKE. 



The springs at Mackinnon's brewery, Mussoorie, increased their dis- 

 cbarge by from 20 to 30 percent., a result accurately 



erv Mussoorie determined by Mr. P. W. Mackinnon. After 20th 



May the increase showed a gradual falling off until 



the end of June when the streams resumed their normal flow. 



Variation of levels between Saharanpur", Dehra-Dun and Mussoorie. 



The following details, kindly furnished me by Lieutenant- Colonel S.. 

 Burrard, seem to show that Dehra Dun and the Siwalik range to the 

 south have been elevated relatively to Saharanpur and Mussoorie since 

 the earthquake. The amounts of the elevation being so slight (only 

 a matter of a few inches) in such a long and steep course, the state- 

 ments are given with all reserve. 



The facts are that in 1862 the line between Sahranpur and 

 jVlussoorie was first levelled. This was repeated in 1904 (the year before 

 the earthquake) so far as the portion between Dehra Dun and 

 Mussoorie is concerned. Again in 1905 after the earthquake the latter 

 portion was again levelled with the object of seeing if any change 

 could be detected, and a diminution of about 4 inches was found in 

 the difference of height between the two places with proportionate dimi- 

 nutions at points on the way. These last two experiments were carried 

 out in May of their years, but the results were ambiguous inasmuch 

 as they might be interpreted as either a rise of Dehra or a sinking of 

 Mussoorie. To settle this point, and also to verify the whole thing 

 sanction was obtained, and the whole line relevelled from Saharanpur, 

 to Mussoorie in the cold weather of 1906-07. The results corrobo- 

 rated the 1905 levellings and established the fact that it was Dehra 

 Dun and the Siwaliks which had risen and not Mussoorie which had 

 sunk. As it must have taken place between May 1904 and May 1905 

 it is conjectured that it happened during the earthquake. 



It may be mentioned that the greatest care was taken in levelling 

 over such a long and mountainous tract, the reliability of the staves 

 and the comparison of them with a standard steel unit kept at Dehra 

 Dun being duly attended to. It is also necessary to emphasise the 



