removed many hundred yards from their situations at the foot of
mountains. On inspecting the locomotion of about thirty acres of earth
with a small house near Bilder's Bridge in Shropshire, about twenty
years ago, from the foot of a mountain towards the river, I well
remember it bore all the marks of having been thus lifted up, pushed
away, and as it were crumpled into ridges, by a column of water
contained in the mountain.

From water being thus confined in high columns between the strata of
mountainous countries it has often happened that when wells or
perforations have been made into the earth, that springs have arisen
much above the surface of the new well. When the new bridge was building
at Dublin Mr. G. Semple found a spring in the bed of the river where he
meant to lay the foundation of a pierre, which, by fixing iron pipes
into it, he raised many feet. Treatise on Building in Water, by G.
Semple. From having observed a valley north-west of St. Alkmond's well
near Derby, at the head of which that spring of water once probably
existed, and by its current formed the valley, (but which in after times
found its way out in its present situation,) I suspect that St.
Alkmond's well might by building round it be raised high enough to
supply many streets in Derby with spring-water which are now only
supplied with river-water. See an account of an artificial spring of
water, Phil. Trans. Vol. LXXV. p. 1.

In making a well at Sheerness the water rose 300 feet above its source
in the well. Phil. Trans. Vol. LXXIV. And at Hartford in Connecticut
there is a well which was dug seventy feet deep before water was found,
then in boring an augur-hole through a rock the water rose so fast as to
make it difficult to keep it dry by pumps till they could blow the hole
larger by gunpowder, which was no sooner accomplished than it filled and