MISCELLANEOUS PHENOMENA. 353 



The instrument there installed is of the pattern known as the 

 Milne -Casella. It is not intended for long-distance quakes but for 

 those of ordinary intensity in the neighbourhood of the station. The 

 recording part of the instrument does not travel constantly but is 

 automatically started by the shock. It gives a large open trace on 

 smoked paper. 



Unfortunately the trace has overlapped itself 3 times, and in the 

 photographic reproduction kindly sent me by Dr. Mitra, it is impossible 

 or very difficult to sort the 3 traces. A few results seem clear. 



(1) The time of commencement by the stoppage of the clock in. 

 connection with the instrument is given as 6h. 10m. 



(2) The time taken for the whole traces was 3 minutes 50 seconds* 



(3) The vertical component of the shock was extremely slight, 

 showing only about Jth to T T ^th inch movement. 



(4) The N. — S. and E. — W. traces are about equal in amplitude, the 

 greatest sweep being over 4 inches range. The natural magni- 

 fication appears to have been about twice, but the position of the 

 instrument on a table in a closed verandah is not good. 



(5) Other points are not certain, but if one reading of the trace is 

 taken as correct, there appear to have been two phases of large amplitude 

 waves, the second being of longer duration, more rapid and greater 

 amplitude. If this is so, it would confirm the frequently repeated state- 

 ments that the second shock was the more intense and long continued. 



In addition to the above details from the seismogram, the follow- 

 ing notes by Dr. Mitra may be added : — 



(1) Almost all pendulum clocks were stopped. In one the fine 



spring of the pendulum broke and it dropped down. 



(2) Some bottles in the chemical laboratory were overturned, 



chiefly those made of thin Bohemian glass. A flask which 

 was boiling over a spirit lamp fell towards west and was 

 smashed completely, similarly also a wash bottle. No 

 bottle in the dispensary room of the State Hospital was 

 overturned. 



