INTRODUCTION. 3 



Survey on the 6th instant, two days after the shock, and distributed 

 officially all over the area likely to have been affected. At the same 

 time an abbreviated question-form was sent to the chief newspapers 

 calling for similar information : — 



1 . Full name and address of observer, given in sufficient detail to permit of 

 adequate acknowledgment in published reports. 



2. Place and district in which the observations were made. 



3. Date on which the observations were first recorded in writing. 



4. Situation of the observer : — 



Please state whether you were — 



(a) indoors when the shock was first felt ; 



(6) in the open air ; 



(c) lying down, sitting, standing or moving. 



5. Time at which the shock was felt. Please state precisely the means by 

 which the time was observed, that is, whether merely guessed, whether recorded 

 at the moment by watch, and whether the watch was compared with a clock 

 known to keep a recognized standard time, such as the clocks kept at railway 

 and telegraph offices. 



6. Number of distinct shocks : — 



(a) Particulars of any tremulous vibrations, not distinguishable as separate 



movements which occurred before the principal and distinctly 



noticeable to-and-fro movements. 

 (6) The number of principal and prominent shocks felt, the intervals in 



seconds between them and the order of their intensity, 

 (c) Existence of tremulous vibrations after the principal shocks and the 



time of their duration. 



7. Apparent direction of shocks, judged by the fall of loose objects, hanging 

 lamps, or movements of water in tanks and bath-tubs. 



8. Sound phenomena. — Please state the nature of any sounds noticed before, 

 during or after the main shocks ; and, if possible, state the interval in seconds 

 between the first sound and the first shock. 



9. Intensity of the shock. — Please state whether the shock was '« hardly felt " 

 or " distinctly felt,' ' and if the latter, please give precise details of its effects in 

 order that an estimate may be made of its intensity at your station. No appa- 

 rently unimportant detail should be omitted, as in the absence of instrumental 

 records, this form of evidence affords the only means of tracing the carves of 

 equal intensity, and of making the first approximate determination of the focus 

 of disturbance. 



10. Effects of the Earthquake. — Please give below any precise observations you 

 have made on the following points : — 



(a) Particulars of objects overturned, their size, position and direction of 

 fall. 



b2 



