In two minutes more they were close to Copperhead. Tom swooped down, let Ned get out, and then with a whiz and a whirr rose and made for Dallas.

The fire bombs to which Tom referred were of his own invention and had achieved such remarkable results that they had been adopted by fire departments all over the United States. They contained chemicals of which Tom held the secret that were of wonderful efficiency in extinguishing fire. Tom had demonstrated their value on many occasions, notably when he had saved a great office building in a city not far from Shopton by dropping from an airplane the bombs containing the chemicals directly on the apparently doomed building, as narrated in the volume of this series entitled: “Tom Swift Among the Fire Fighters.”

Tom’s mind was a tumult of stormy thoughts. Would Wesson and Robbins have the bombs? Would Ned be able to get his message through in time? Even if these things went smoothly, would he get back before the flames reached the well, making all his efforts go for naught?

But he did not let these thoughts take his mind off the plane. This was vital. If the plane broke down, all hope would be gone.

So he urged and coaxed the plane along, pressing it to the utmost speed he dared. This was a race—a race against fire—a race against time!

Before long he could see the towers and steeples of the city in the distance. He neared it rapidly, straining his eyes to catch sight of the flying field with its white signals for the guidance of airmen.

Yes, there it was, and luckily on this side of the city. He swooped down and made his landing in close proximity to a loaded truck that he guessed might contain the bombs.

As he jumped out and ran toward it, he saw with a thrill of exultation the name of Wesson and Robbins on the truck. Ned had got the message through. Good old Ned!

It was the work of only a few minutes with the aid of Koku and the two burly truckmen to get the bombs transferred to the plane. And Tom blessed his stars that he had brought the big plane South with him instead of one of his smaller airships.

With a hurried word of thanks, Tom jumped into his seat and started on his homeward journey. On the way he instructed Koku to hold himself in readiness to drop the bombs when he should give the word.