he question of knowing
whether they could think of leaving Lincoln Island or not was definitely
settled.

The twelve hundred miles which separated the island from the Pomoutous
Island was a considerable distance. A boat could not cross it,
especially at the approach of the bad season. Pencroft had expressly
declared this. Now, to construct a simple boat even with the necessary
tools, was a difficult work, and the colonists not having tools they
must begin by making hammers, axes, adzes, saws, augers, planes, etc.,
which would take some time. It was decided, therefore, that they
would winter at Lincoln Island, and that they would look for a more
comfortable dwelling than the Chimneys, in which to pass the winter
months.

Before anything else could be done it was necessary to make the iron
ore, of which the engineer had observed some traces in the northwest
part of the island, fit for use by converting it either into iron or
into steel.

Metals are not generally found in the ground in a pure state. For the
most part they are combined with oxygen or sulphur. Such was the case
with the two specimens which Cyrus Harding had brought back, one of
magnetic iron, not carbonated, the other a pyrite, also called sulphuret
of iron. It was, therefore the first, the oxide of iron, which they must
reduce with coal, that is to say, get rid of the oxygen, to obtain it in
a pure state. This reduction is made by subjecting the ore with coal to
a high temperature, either by the rapid and easy Catalan method,
which has the advantage of transforming the ore into iron in a single
operation, or by the blast furnace, which first smelts the ore, then
changes it into iron, by carrying away the three to four per cent. of
coal, which is combined with it.

Now Cyrus Harding wanted iron, and he wished to obtain it as soon as
possible. The ore which he had picked up was in itself very pure and
rich. It was the oxydulous iron, which is found in confused masses of a
deep gray color; it gives a black dust, crystallized in the form of the
regular octahedron. Native lodestones consist of this ore, and iron
of the first quality is made in Europe from that with which Sweden and
Norway are so abundantly supplied. Not far from this vein was the vein
of coal already made use of by the settlers. The ingredients for the
manufacture being close together would greatly facilitate the treatment
of the ore. This is the cause of the wealth of the mines in Great
B