“Water! we’ll find water there!” said the doctor.
And, instantly, opening the upper valve, he let some hydrogen escape, and slowly descended, taking the ground at about two hundred feet from the edge of the oasis.
In four hours the travellers had swept over a distance of two hundred and forty miles!
The car was at once ballasted, and Kennedy, closely followed by Joe, leaped out.
“Take your guns with you!” said the doctor; “take your guns, and be careful!”
Dick grasped his rifle, and Joe took one of the fowling-pieces. They then rapidly made for the trees, and disappeared under the fresh verdure, which announced the presence of abundant springs. As they hurried on, they had not taken notice of certain large footprints and fresh tracks of some living creature marked here and there in the damp soil.
Suddenly, a dull roar was heard not twenty paces from them.
“The roar of a lion!” said Joe.
“Good for that!” said the excited hunter; “we’ll fight him. A man feels strong when only a fight’s in question.”
“But be careful, Mr. Kennedy; be careful! The lives of all depend upon the life of one.”