Descriptive Report. 47
The effects of the disturbance upon three stacks of
chimneys at Mr. J. C. Shenstone's (No. 18) and neighbour's
are sufficiently important to describe in some detail. The
positions of the stacks are shown in the accompanying
sketch (plan) kindly furnished by Mr. Shenstone:—
Fig. 1.—Plan showing position of Chimney-stacks at Mr. Shenstone's.]
The stacks numbered 1 and 8 were cracked at the base round
the N., E., and W. sides, a, b, and o, whilst the S. sides d
remained firmly attached, so that the stacks could be tilted to-
wards the S. by a slight push, being hinged by their remain-
ing attachment along the line d. Stack No. 2 was cracked
all round the base and displaced about a quarter of an inch
towards the S., leaving a quarter of an inch of clean mortar
exposed on the northern side a. These facts appear to indi-
cate that the houses were here moved approximately in a N.
and S. direction, the disturbance probably travelling from
the S.25
The premises of Messrs. H. and J. Joslin, Nos. 108 and
109, High Street, were made to oscillate in a direction which
Mr. Joslin at the time estimated to be N. and S., the move-
ment lasting "two or three seconds." Au assistant was
engaged on a drawing placed upon a long glass-topped
counter in the show-room, this counter extending in the
25 Milne states (' Nature,' Oct. 26th, 1882, p. 629), that the motion
of the ground inwards, towards the origin, is in some instances greater
than the motion outwards, away from the origin. This may explain the
peculiar fracturing of the chimneys, referred to above.