HuTTOX. — Tlie Earthquake in the Ainuri. 



281 



The other places from which I have records pointing more or 

 less in the true direction are — Greymoutli, E. and W. ; Notown, 

 S.E. to N.W. ; Westport, S.E. to N.W. ; Eeefton, S.E. to 

 N.W. ; Boatman's, first shock E. a.nd W., second S.E. to 

 N.W.; Lvell, S. to N., or S.E. to N.W. ; Nelson, S.W. to 

 N.E. ; Blenheim, S.W. to N.E. ; Kaikoura, N.N.W. to S.S.E. ; 

 Waikari, N. and S. ; Leeston, N. and S. ; and Kirwee, N. and 

 S. ; or fourteen stations in all. I have also ten other stations, 

 in which the directions given are too wide of the mark to be of 

 any use. They are — Eangiora, S.W. to N.E. ; Ohoka, E.S.E. 

 to W.N.W. ; Ashburton, E. and W. ; Lauriston, S.E. to N.W. ; 

 Glentunnel, E. and W. ; Timaru, between W. and N. ; Queens- 

 town, N.W. to S.E. ; Dunedin, E. to W. ; Invercargill, W. to 

 E. ; Manaia, S. to N. (nearly correct). 



If we project the fourteen fairly accurate directions on a 

 map, and then describe the smallest circle possible which will 

 touch or cut all the lines, it comes out that the circle has a 

 radius of about thirty miles, and its centre is situated at the 

 Amuri Pass, at the head of the Doubtful and Ahaura Eivers, 

 about seventeen and a half miles W.N.W. of Glynn Wye. 

 This approximation is nearer the truth than could have been 

 expected. 



Time of the Shock at Different PZaces. — Time-observations 

 are subject to error from the clock not showing correct time, 

 from incorrect readings, and from observations being taken at 

 different periods of the shock. The first source of error is got 

 over by comparing the clock with telegraph-time as soon as 

 possible after the shock. When a clock is stopped by the 

 earthquake the second source of error is eliminated ; but the 

 first and third remain. If, however, the time of the shock is 

 correctly given to the nearest minute, and the stations are 

 sufficiently distant from each other, fairly accurate determina- 

 tions may be made from them ; and experience has shown that 

 in a civilised country, with telegraphs and railways, these time- 

 observations are of great value. The following are the times 

 reported : — 



New Plymouth 



Manaia 



Wanganui 



Feilding 



ISIasterton 



Welliugton 



Nelson 



Havelock 



Blenheim 



Kaikoura 



Hanmer Plains 



Waikari 



A cursory inspection of this list will show that many of 



