“You catch on fast, Kamuka,” complimented Biff. “Yes, a burning glass is often used to start a fire. It’s a right handy thing to have.”

Kamuka pocketed the microscope along with the mirror and his other new possessions. In a serious tone, he said, “Time to get ready for trail now.”

Biff noted that Jacome was assigning the new bearers to their packs and other equipment.

“Yes, recess is over,” acknowledged Biff. “Let’s get our packs and join the parade.”

The boys found, much to their relish, that they were not needed as pack carriers. Mr. Whitman had hired a few spare bearers at the village, and since this new crew was fresh, with less than a half day’s journey before sunset, Mr. Brewster had decided to let them take the full load.

“You two can go ahead,” Mr. Brewster told Biff and Kamuka. “The villagers tell me that the trail is well marked, so you won’t miss it. But there may be short stretches that need clearing before we come along.”

It worked out as Mr. Brewster anticipated. At a few spots, Biff and Kamuka encountered tangled undergrowth which they managed to hack away with their machetes, by the time the safari caught up with them. As they were starting ahead again, Mr. Brewster noted the position of the sun.

“Allow about an hour,” he told the boys. “Then start looking for a good campsite. You can wait there for us.”

Biff enjoyed the carefree, late-afternoon hike through the vast green vault of the jungle, particularly with Kamuka, who was quick to spot all forms of wild life. Once, Kamuka pointed to a curious creature with a huge shell that was moving across the trail. Biff looked just in time to see it roll up into a solid ball and play dead.

The thing was an armadillo, the most heavily armored denizen of the jungle. Again, Kamuka called a halt while they watched what looked like a Teddy bear with white legs attached to a gray, black-banded body. It was attacking a huge anthill, darting a long, thin tongue from its snouted muzzle. The creature was a giant anteater, feeding on its favorite prey.