his beginning of which
the engineer spoke was the construction of an apparatus which would
serve to transform the natural substances. The part which heat plays in
these transformations is known. Now fuel, wood or coal, was ready for
immediate use, an oven must be built to use it.

"What is this oven for?" asked Pencroft.

"To make the pottery which we have need of," replied Harding.

"And of what shall we make the oven?"

"With bricks."

"And the bricks?"

"With clay. Let us start, my friends. To save trouble, we will establish
our manufactory at the place of production. Neb will bring provisions,
and there will be no lack of fire to cook the food."

"No," replied the reporter; "but if there is a lack of food for want of
instruments for the chase?"

"Ah, if we only had a knife!" cried the sailor.

"Well?" asked Cyrus Harding.

"Well! I would soon make a bow and arrows, and then there could be
plenty of game in the larder!"

"Yes, a knife, a sharp blade." said the engineer, as if he was speaking
to himself.

At this moment his eyes fell upon Top, who was running about on the
shore. Suddenly Harding's face became animated.

"Top, here," said he.

The dog came at his master's call. The latter took Top's head between
his hands, and unfastening the collar which the animal wore round his
neck, he broke it in two, saying,--

"There are two knives, Pencroft!"

Two hurrahs from the sailor was the reply. Top's collar was made of a
thin piece of tempered steel. They had only to sharpen it on a piece of
sandstone, then to raise the edge on a finer stone. Now sandstone was
abundant on the beach, and two hours after the stock of tools in the
colony consisted of two sharp blades, which were easily fixed in solid
handles.

The production of these their first tools was hailed as a triumph. It
was indeed a valuable result of their labor, and a very opportune one.
They set out.

Cyrus Harding proposed that they should return to the western shore of
the lake, where the day before he had noticed the clayey ground of which
he possessed a specimen. They therefore followed the bank of the Mercy,
traversed Prospect Heights, and after a walk of five miles or more they
reached a glade, situated two hundred feet from Lake Grant.

On the way Herbert had discovered a tree, the branches of which the
Indians of South America employ for making their bows. It was the
crejimba, of the palm family, which does not bear edible frui