rbert then went round the point of
the islet, so as to take them in the rear, and cut off their retreat.
During this time Cyrus Harding, Spilett, and Neb, crawling behind the
rocks, glided towards the future scene of combat.

All at once the tall figure of the sailor appeared. Pencroft shouted.
The engineer and his two companions threw themselves between the sea and
the seals. Two of the animals soon lay dead on the sand, but the rest
regained the sea in safety.

"Here are the seals required, captain!" said the sailor, advancing
towards the engineer.

"Capital," replied Harding. "We will make bellows of them!"

"Bellows!" cried Pencroft. "Well! these are lucky seals!"

It was, in fact, a blowing-machine, necessary for the treatment of
the ore that the engineer wished to manufacture with the skins of the
amphibious creatures. They were of a medium size, for their length did
not exceed six feet. They resembled a dog about the head.

As it was useless to burden themselves with the weight of both the
animals, Neb and Pencroft resolved to skin them on the spot, while Cyrus
Harding and the reporter continued to explore the islet.

The sailor and the Negro cleverly performed the operation, and three
hours afterwards Cyrus Harding had at his disposal two seals' skins,
which he intended to use in this state, without subjecting them to any
tanning process.

The settlers waited till the tide was again low, and crossing the
channel they entered the Chimneys.

The skins had then to be stretched on a frame of wood and sewn by means
of fibers so as to preserve the air without allowing too much to escape.
Cyrus Harding had nothing but the two steel blades from Top's collar,
and yet he was so clever, and his companions aided him with so much
intelligence, that three days afterwards the little colony's stock of
tools was augmented by a blowing-machine, destined to inject the air
into the midst of the ore when it should be subjected to heat--an
indispensable condition to the success of the operation.

On the morning of the 20th of April began the "metallic period," as the
reporter called it in his notes. The engineer had decided, as has been
said, to operate near the veins both of coal and ore. Now, according to
his observations, these veins were situated at the foot of the northeast
spurs of Mount Franklin, that is to say, a distance of six miles from
their home. It was impossible, therefore, to return every day to the
Chimne