Chapter 18

CHAPTER 18

Cyrus Harding's project had succeeded, but, according to his usual habit he
showed no satisfaction; with closed lips and a fixed look, he remained
motionless. Herbert was in ecstasies, Neb bounded with joy, Pencroft nodded
his great head, murmuring these words,--

"Come, our engineer gets on capitally!"

The nitro-glycerine had indeed acted powerfully. The opening which it had
made was so large that the volume of water which escaped through this new
outlet was at least treble that which before passed through the old one.
The result was, that a short time after the operation the level of the lake
would be lowered two feet, or more.

The settlers went to the Chimneys to take some pickaxes, iron-tipped
spears, string made of fibers, flint and steel; they then returned to the
plateau, Top accompanying them.

On the way the sailor could not help saying to the engineer,--

"Don't you think, captain, that by means of that charming liquid you have
made, one could blow up the whole of our island?"

"Without any doubt, the island, continents, and the world itself,"
replied the engineer. "It is only a question of quantity."

"Then could you not use this nitro-glycerine for loading firearms?" asked
the sailor.

"No, Pencroft; for it is too explosive a substance. But it would be easy
to make some guncotton, or even ordinary powder, as we have azotic acid,
saltpeter, sulphur, and coal. Unhappily, it is the guns which we have not
got.

"Oh, captain," replied the sailor, "with a little determination--"

Pencroft had erased the word "impossible" from the dictionary of Lincoln
Island.

The settlers, having arrived at Prospect Heights, went immediately
towards that point of the lake near which was the old opening now
uncovered. This outlet had now become practicable, since the water no
longer rushed through it, and it would doubtless be easy to explore the
interior.

In a few minutes the settlers had reached the lower point of the lake,
and a glance showed them that the object had been attained.

In fact, in the side of the lake, and now above the surface of the water,
appeared the long-looked-for opening. A narrow ridge, left bare by the
retreat of the water, allowed them to approach it. This orifice was nearly
twenty feet in width, but scarcely two in height. It was like the mouth of
a drain at the edge of the pavement, and therefore did not offer an easy
passage to the settlers; but Neb and Pencroft, taking their pickaxes, soon
made it of a suitable height.

The engineer then approached, and found that the sides of the opening, in
its upper part at least, had not a slope of more than from thirty to
thirty-five degrees. It was