the carronades, under the supposition that the roar of the gun, and most
especially the echo, of which there was one in particular that was truly
terrific, might have the effect to frighten away the whole party. Heaton
was in doubt about the result, for Waally and his people knew something
of artillery, though of echoes they could not know anything at all.
Nothing like an echo, or indeed a hill, was to be found in the low coral
islands of their group, and the physical agents of producing such sounds
were absolutely wanting among them. It might be that something like an
echo had been heard at Rancocus Island, but it must have been of a very
different calibre from that which Heaton and Mark were in the habit of
making for the amusement of the females, by firing their fowling-pieces
down the Stairs. As yet neither of the guns had been fired from the
proper point, which was the outer battery, or that on the shelf of rock,
though a very formidable roaring had been made by the report of the gun
formerly fired, as an experiment to ascertain how far it would command
the entrance of the cove. After a good deal of discussion, it was
decided to try the experiment, and Betts, who knew all about the means
necessary to produce the greatest reverberations, was despatched to the
shelf-battery with instructions to scale its gun, by pointing it along
the cliff and making all the uproar he could.

This plan was carried out just as Waally had assembled his chiefs
around his own canoe, whither he had called them by an order, to consult
on the manner in which the entire coast of the island ought to be
examined, that a landing might be effected. The report of the gun came
quite unexpectedly to all parties; the echo, which rolled along the
cliffs for miles, being absolutely terrific! Owing to the woods and
intervening rocks, the natives could see no smoke, which added to their
surprise, and was doubtless one reason they did not, at first,
comprehend the long, cracking, thundering sounds that, as it might be,
rolled out towards them from the island. A cry arose that the strange
rocks were speaking, and that the Gods of the place were angry. This was
followed by a general and confused flight;--the canoes, paddling away as
if their people were apprehensive of being buried beneath the tumbling
rocks. For half an hour nothing was seen but frantic efforts to escape,
nothing heard but the dip of the paddle and the wash of its rise.

Thus far the plan