Disappearing within the tent after his excited , left two bewildered individuals staring at each other beside the camp fire.  
“What in the world can he mean?” wondered Bob, getting to his feet.
 
“He has heard something over the radio,” Mr. Hampton. “From the way he dashed into the tent, in fact, I’d say he’s still listening in. Come on, let’s investigate.”
 
Hastening across the intervening space, they pushed aside the tent flap, finding the interior lighted by lantern, and discovered Frank seated at the radio with the headpiece clamped to his ears and Jack bending above him.
 
As they entered they heard Frank speaking into the transmitter say:
 
“Here he is, Mr. Ransome. Just a minute.” Pulling the headpiece from his ears, Frank it to Mr. Hampton, while getting to his feet.
 
“What’s going on? Who have you?” questioned Mr. Hampton, still bewildered. But at the same time he accepted the proffered instrument, while Jack thrust him into the camp chair vacated by Frank.
 
“It’s the English trader we met at Kisumu,” responded Frank. “He’s calling for you. Says he’s called every night for a week over the station at Entebbe where he is now located. But he’ll explain. Talk to him.”
 
Pulling the transmitter toward him, Mr. Hampton obediently called “Hello.”
 
Then Bob, unable longer to control his , seized Frank and pulled him outside.
 
“Now tell me what’s going on,” he commanded. “I don’t want to speak in there for fear of disturbing Mr. Hampton. But what’s this all about?”
 
It had grown darker in the short since Bob had entered the tent, for once the sun goes down in equatorial Africa night comes on apace. But the light of the lantern fell through the opening upon Frank who stood holding back the flap and listening to what Mr. Hampton was saying inside, and this light showed his eyes with excitement.
 
He turned to Bob as if reluctant to discontinue trying to hear what the older man seated at the radio transmitter was saying. Then he grinned at big Bob’s .
 
“Listen, old thing,” he said. “We’re in luck.”
 
“Luck?”
 
“Yes, of the biggest kind. The man on the other end of the line is none other than the Englishman we met at Kisumu.”
 
“Well, what of it? Why don’t you tell me what he said?” Big Bob’s exasperation at this teasing grew apace.
 
“He’s been calling every night for a week from Entebbe in the hope that we would pick him up. But as you know we haven’t been using the radio much, and so we haven’t happened to hear him.”
 
“All right,” said Bob, his patience . “I heard that. Now will you talk turkey?” And reaching out a big arm, he pulled Frank against his chest and began to his head with his free hand in the familiar fashion known as administering the “Dutch rub.”
 
“Ouch. Leggo, you big bully,” Frank. “Will you talk straight?”
 
“Uh-huh.”
 
Bob released him. “Now speak up,” he said , “or who knows what’ll happen to you?”
 
“He wants us to go with him to the Mountains of the Moon?”
 
“Are you trying to—”
 
Frank backed off, laughing, hands held up defensively in front of him.
 
“No, I’m not trying to kid anybody,” he said. “Well, what’s this ‘Mountains of the Moon’ stuff, then?”
 
“Not the Moon in the sky, Bob,” said Frank. “But a mountainous district in the Belgian Conga constituting the very heart of Africa.”
 
“Oh.” Bob was mollified, but still puzzled. “What for?”
 
“There are active volcanoes over there, and Mr. Ransome says they are reported by native reaching Entebbe to be in . He’s going in and says he thought we might want to go along.”
 
Bob felt his interest quickened. Volcanoes in active eruption. That would be something like, a sight worth travelling hundreds of miles to see. “Fine,” he cried enthusiastically. “What wonderful picture stuff.”
 
Frank nodded. “That’s what I thought of the first thing, too.”
 
“But what is Mr. Ransome going in for?” asked Bob.
 
“Oh, I suppose these fellows who knock about the wilds like to take in the sights as well as we who don’t live here all the time.”
 
“Maybe so,” agreed Bob. Then, as a new thought occurred to him, he asked: “How soon could we get to Entebbe? And how much farther does this region lie?”
 
Frank confessed ignorance regarding the answers to both questions.
 
“Come on, let’s go back inside,” he said, “now that your curiosity is satisfied. You know as much about it now as I do. Let’s see what Mr. Hampton has to say.”
 
The latter concluded h............