EARTHQUAKE MOTION TO GREAT DISTANCES. 



14U 



The uncertainty of the response of light horizontal peudula with photographic 

 registration to the early phases of the disturbance, as compared with the greater 

 constancy of response on the part of the very heavy pendula used in Italy, is very 

 marked in the case of this earthquake. 



Converted into intervals these times become 



(5. JAPAN, August 5, 1897. 



According to Professor MILNE the focus of this earthquake was practically the 

 same as that of June 15, 1896. The time of origin is determined as O h 9'4 m . 



The following times are taken from the detailed account in ' Boll. Soc. Sismol. 

 Ital.,' vol. 4, Part II., except in the case of Shide, for which the authority is ' Brit. 

 Assoc. Rep.,' 1898, p. 192. 



Nicolaiew.0 h 17'" commencement, O h 22"' increase of amplitude to 8 millims., 

 O h 31 m trace disappears, 3 h 52 m end of disturbance. 



Shide. O h 22 25" commencement, preliminary tremors 30'", duration over 3 h . 



Padua. O 11 24'" commencement, end towards 2 h 30 m . 



Rome. Grande sismom. ; O h 23 m 55' commencement on N.E. S.W. component, 

 a maximum at O h 28 25", after which the disturbance decreases ; a sudden increase 

 at O h 34"' 35", a second maximum at O h 35 m 10' ; slow undulations commence at 

 O h 53 m 45', maximum l h 8 m 45', end 2 h 44 15'. On the N.W. 8.E. component : 

 O h 24 45" commencement, a sudden increase at O h 34 55 s , slow undulations com- 

 mence towards O h 59 45', maximum l h 8 m 25 s . 



Sismom. setter ; N.E. S.W. component : O' 1 24 m 20' commencement, a maximum 

 at O h 27 55', after which the disturbance nearly dies out, O h 59 commencement 

 of slow waves, maximum at l h 8 D1 40 s , end at 2 h 28 30'. On N.W.-^S.E. com- 



