gun to flow, the artificers were
occupied in removing the forge from the top of the building, to which
the gangway or wooden bridge gave great facility; and, although it
stretched or had a span of forty-two feet, its construction was
extremely simple, while the roadway was perfectly firm and steady. In
returning from this visit to the rock every one was pretty well soused
in spray before reaching the tender at two o'clock p.m., where things
awaited the landing party in as comfortable a way as such a situation
would admit.
Friday, 11th May.
The wind was still easterly, accompanied with rather a heavy swell of
sea for the operations in hand. A landing was, however, made this
morning, when the artificers were immediately employed in scraping the
seaweed off the upper course of the building, in order to apply the
moulds of the first course of the staircase, that the joggle-holes might
be marked off in the upper course of the solid. This was also necessary
previously to the writer's fixing the position of the entrance door,
which was regulated chiefly by the appearance of the growth of the
seaweed on the building, indicating the direction of the heaviest seas,
on the opposite side of which the door was placed. The landing-master's
crew succeeded in towing into the creek on the western side of the rock
the praam-boat with the balance-crane, which had now been on board of
the praam for five days. The several pieces of this machine, having been
conveyed along the railways upon the waggons to a position immediately
under the bridge, were elevated to its level, or thirty feet above the
rock, in the following manner. A chain-tackle was suspended over a
pulley from the cross-beam connecting the tops of the kingposts of the
bridge, which was worked by a winch-machine with wheel, pinion, and
barrel, round which last the chain was wound. This apparatus was placed
on the beacon side of the bridge, at the distance of about twelve feet
from the cross-beam and pulley in the middle of the bridge. Immediately
under the cross-beam a hatch was formed in the roadway of the bridge,
measuring seven feet in length and five feet in breadth, made to shut
with folding boards like a double door, through which stones and other
articles were raised; the folding doors were then let down, and the
stone or load was gently lowered upon a waggon which was wheeled on
railway trucks towards the lighthouse. In this manner the several
castings of the bala
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