EARTHQUAKES IN NEW ZEALAND. 



245 



and then give means of guessing at the intensity of the earthquake 

 as shown by the velocity of the earth-particles, i.e. the velocity of 

 shock. So far, I believe, no estimate has been formed of what this 

 velocity may have been in any New Zealand earthquake. From 

 •calculations made, 1 believe the velocity of shock of the earthquake of 

 September 1st, 1888, to have been between 12 and 19 feet per 

 second. Though we cannot really determine this element without 

 good instruments, we may be able to find limits within which it must 

 lie. 



I trust I have succeeded in showing that there is something 

 worth observing in regard to New Zealand earthquakes, and that to 

 observe it does not require any special training but only ordinary care 

 and intelligence ; as in everything else a high degree of accuracy 

 only comes with practice, which as far as earthquakes are concerned, 

 most of us would willingly dispense with. Perhaps at a future time 

 the Editor may have space for some account of the results of the work 

 already done by various individuals in the department of New Zealand 

 Seismology. 



EARTHQUAKE AT_ 



N.Z. 



Date 



ISO 



[Please answer precisely any or all of the following Questions.^ 



1. Time of beginning of shock. 

 If piossiblc, N.Z. Mean Time. 





2. Whether clock was verified 

 by N.Z Mean Time. 





3. Nature of shock — slight, 

 sharp, or severe. 





4. Apparent direction — [e.g. — 

 S. E. to N. W. ; then N. E . to S. W/| 





5. Apparent duration. 









G. Effects, [e.g. — docks stopped; 

 bells rung ; crockery broken ; 

 chimneys thrown down.] 













1. Remarks, [e.g. previous tre- 

 mors or rumbling ; spilling of 

 liquids, with direction of overflow; 

 landslip in neighbourhood ; special 

 instruments used in observation. 











Signature of Observer _ 

 A ddress 

 Date 



