The Earthquake in Relation to Geological Structure. 155
Belgium.
Ostend.—Shock felt between 9 and 9.30; bed oscillated
two or three times from N.W. to S.E., room shaken ;
duration about two seconds. (Report from Mr. Oliver Lodge,
barrister-at-law, 14, Rue Louise ; witnessed by Mrs. G.
Charlton.).
The extreme limits of the shock in the southern area are
thus: to the east Ostend, long. 2° 58' E.; to the south
Freshwater, lat. 50° 40' N ; and to the west Exeter,
long. 3° 32' W.
An estimation of the total area over which the sensible
shock extended has already been given (see p. 22).49
VI. The Earthquake in Relation to Geological
Structure.60
Effects of the Shock upon Underground Waters.
St. Peter's Well.—The temporary effects produced upon the
water at St. Peter's Well, and upon the well of the coast-
guard station at West Mersea, and the spouting forth of rills
49 Since the foregoing descriptive portion of the report was presented
to the Club a few additional facts have been communicated, and may be
here conveniently recorded:—On the occasion of the Club's visit to
Witham (July 25th, 1885), I was informed by Lord Rayleigh that at
Terling Place the house bells were rung, and also the bells in Terling
church. Mr. P. H. Meggy reports also that at a house on the London Road,
about a mile out of Chelmsford, a little girl was playing the piano in a
room facing S.E., the instrument standing against a wall facing N.E.,
and an old fashioned upright chime clock being at the opposite (S.W.)
end of the room, with its pendulum swinging S.E. to N.W. At the
moment of the disturbance the girl ran away frightened from the piano,
which she declared had come towards her; and it was afterwards found
that the instrument had been moved about 3 inches away from the wall
towards the S.W., while the clock was also stopped. These facts
indicate a movement more or less in a N.E. to S.W. direction.
50 Some portions of this section have already been communicated to
the Geologists' Association, and appear in the ' Proceedings' of that
Society under the title:—"On some geological aspects of the East
Anglian Earthquake," vol. ix., Feb. 1885, p. 2.