42 STUART : THB SIIIMANGAL EAKTHQUAKF, OF STH JULY 1918. 
The Rocca di Papa seism ograms are reproduced on Plate 9. 
Observatories are 
Observatory. 
P. 
s. 
M. 
End. 
H. M. 
H. M. S. 
1 
H. M. S. 
liarteolona .... 
10 33 42 
10 43 4 
10 58 11 
Batavia ..... 
10 28 54 
10 38 0 
12 8 0 
Bidston ..... 
10 33 38 
10 43 2 
Catania ..... 
Neither of two seismographs showed nnj 
• trace of an earthquake. 
Byoe (Aberdeen) 
10 33 36 
10 42 48 
Edinburgli 
10 33 50 
10 43 0 
11 14 40 
14 21 0 
Eskdalemuir . 
10 33 40 
10 43 0 
Georgetown (Washington) 
10 47 41 
Ischia ..... 
10 32 53 
10 41 21 
12 30 0 
Manila ..... 
10 28 16 
10 33 39 
10 37 0 
Ottawa . . • > . 
10 36 37 
10 47 8 
Perth 
10 33 32 
10 40 40 
Biverview (Sydney) 
10 34 24 
10 44 33 
San Fernando 
10 34 18 
10 44 30 
Shide 
No record 
as the paper 
was being changed at tlie time. 
Taihoku ..... 
10 27 57 
10 32 50 
West Bromwich 
10 33 37 
10 42 51 
A photograph of the Bidston Seismograph is shown on Plate 
No. 9. 
Both this and the Rocca di Papa seismograms were reproduced 
at the Alipur Observatory, Calcutta, by kind permission of Dr. 
D. B. Meek, the Director of the Observatory. 
On studying these records it becomes evident that the time at 
origin deduced by me in my preliminary report, viz., 10 hours 20 
minutes Gr. M. T. (15 hours 50 minutes Indian Standard Time) is 
t(X) early and that the correct time was approximately two minutes 
later. This was first pointed out to me by Mr. J. J. Shaw, Secre- 
tary to the Committee of the British Association for Seismological 
Observations. He writes : — 
" You will be interested to note that the British times support you in putting 
the time of occurrence onward to 15 hours 50 minutes I.S.T. (10-20 G.M.T.) in 
fact our times seem to indicate that the time of origin was even later still. J 
