"Well, it will not be enough."

"Good."

"We shall not be able to reach the neutral point."

"The deuce!"

"We shall not even get half way."

"In the name of the projectile!" exclaimed Michel Ardan, jumping as if it was already on the point of striking the terrestrial globe.

"And we shall fall back upon the earth!"

CHAPTER V.

THE COLD OF SPACE.

This revelation came like a thunderbolt. Who could have expected such an error in calculation? Barbicane would not believe it. Nicholl revised his figures: they were exact. As to the formula which had determined them, they could not suspect its truth; it was evident that an initiatory velocity of 17,000 yards in the first second was necessary to enable them to reach the neutral point.