upper links taken off, and the ram and cross-head lowered to take
another stroke." To guard against all chances of injury to the tubes in
case of accident to the machinery, a contrivance was adopted by which
the tubes were followed up with wedges. The importance of this
precaution was fully proved on the very first attempt to raise the tube
on the Anglesea side, when the huge cylinder broke, almost at the
commencement of the operations. The following is the engineer's
interesting report of the accident:

"On Friday last (August 17, 1849), at a quarter to twelve o'clock, we
commenced lifting the tube at the Anglesea end, intending to raise it
six feet, and afterwards to have raised the opposite end the same
height.

"The tube rose steadily to the height of two feet six inches, being
closely followed up by inch wooden boards packed beneath it, when
suddenly, and without any warning, the bottom of the hydraulic press
gave way, separating completely from the body of the press.

"The ram, cross-head, and chains descended violently on the press, with
a tremendous noise, the tube sinking down upon the wooden packing
beneath it. The bottom of the press, weighing nearly two tons and a
half, fell on the top of the tube, a depth of eighty feet.

"A sailor, named Owen Parry, was ascending a rope ladder at the time,
from the top of the tube into the tower; the broken piece of press in
its descent struck the ladder and shook him off; he fell on to the tube,
a height of fifty feet, receiving a contusion of the skull, and other
injuries, of so serious a nature that he died the same evening. He was
not engaged in the raising, and had only chosen to cross the tube, as