196 The East Anglian Earthquake.
(Lieut.-Col. Samson's report, p. 149). Movement at Kew approxi-
niately N.N.E.—S.S.W, (p. 152); at West Ham N.E.—S.W. (p. 116).
42. Minley Grange. Tea spilt to W. (Mrs. E. Wodehouse's report, p. 158).
43. Ostend. Bed oscillated N.W.-S.E. (Mr. 0. Lodge's report, p. 155).
Before proceeding to discuss the foregoing observations, it
must be remarked that their value is but slight from the point
of view of the exact localisation of the origin, for the reasons
already assigned. In cases where several records have been
obtained from the same station, only the most important have
therefore been selected. The records as given have in most
instances referred only to the direction, without taking into
consideration the point from which the disturbance came.
This presents no difficulty, however, as the main axis of
damage has already been localised (p. 92). It is obvious also
that a body may be moved, as already stated, either towards
or away from the origin by the same earthquake, but this does
not affect the direction of the line of the movement. As the
above observations are all more or less of a rough and ready
character, and lacking the precision of instrumental records,
the only way of treating them has appeared to us to give the
mean direction104 of the records where several are given from
the same or neighbouring places. The directions thus found
are entered in the map (Plate IV.), which shows at the same
time the general distribution of the damage by depth of
shading given by the size and proximity of the black dots.
When isolated observations of direction bear no reference to
the position of the known axis of disturbance, they have been
neglected:—
Direction No. 1. Colchester.—Nos. 1, 3, and 7, as referring
to swinging objects, appear to be of the most weight. No. 2
indicates a N.-S. movement, but may also have resulted from
a movement many degrees E. or W. of N. and S. Nos. 4, 5,
and 6 not sufficiently definite. No. 7 indicates an impulse
from S.: the clock started shows a movement N.-S. No. 8
simply an overthrow.
Mean direction of Nos. 1, 2, 3, and 7 :—N. 11° W.-S. 11° E.
104 That is to say, the half distance (angular measure) between the two
extremes.