“That will get the elephants!” he exclaimed.  It did, as you shall soon learn, and it also was the means of saving several lives in the wilds of the African jungle.

CHAPTER VI

NEWS FROM ANDY

Tom Swift’s former airship, the Red Cloud, had been such a fine craft, and had done such good service that he thought, in building a successor, that he could do no better than to follow the design of the skyship which had been destroyed in the ice caves.  But, on talking with the old elephant hunter, and learning something of the peculiarities of the African jungle the young inventor decided on certain changes.

In general the Black Hawk would be on the lines of the Red Cloud but it would be smaller and lighter and would also be capable of swifter motion.

“You want it so that it will rise and descend quickly and at sharp angles,” said Mr. Durban.

“Why,” inquired Tom.

“Because in Africa, at least in the part where we will go, there are wide patches of jungle and forest, with here and there big open places.  If you are skimming along close to the ground, in an open place, in pursuit of a herd of elephants and they should suddenly plunge into the forest, you would want to be able to rise above the trees quickly.”

“That’s so,” admitted Tom.  “Then I’ll have to use a smaller gas bag than we had on the other ship, for the air resistance to that big one made us go slowly at times.”

“Will it be as safe with a small bag?” Mr. Damon wanted to know.

“Yes, for I will use a more powerful gas, so that we will be more quickly lifted,” said the young inventor.  “I will also retain the aeroplane feature, so that the Black Hawk will be a combined biplane and dirigible balloon.  But it will have many new features.  I have the plans all drawn for a new style of gas generating apparatus, and I think it can be made in time.”

There were busy days about the Swift home.  Mrs. Baggert, the housekeeper, was in despair.  She said the good meals she got ready were wasted, because no one would come to table when they were ready.  She would ring the bell, and announce that dinner would be served in five minutes.

Then Tom would shout from his workshop that he could not leave until he had inserted a certain lever in place.  Mr. Jackson would positively decline to sit down until he had screwed fast some part of a machine.  Even Mr. Swift, who, because of his recent illness, was not allowed to do much, would often delay his meal to test some new style of gears.

As for Mr. Damon, it was to be expected that he would be eccentric as he always was.  He was not an expert mechanic, but he knew something of machinery and was of considerable help to Tom in the rush work on the airship.  He would hear the dinner bell ring, and would exclaim: 

“Bless my napkin ring!  I can’t come now.  I have to fix up this electrical register first.”