you parents neednât worry. Are there any last-minute questions?â
âYes,â said Mrs. Pearson, dabbing at her eyes with a handkerchief. âCanât you change your minds and stay home?â
âOh, Ma,â Joe protested. âDonât start that again.â
âTheyâll be perfectly safe, Sarah,â said Mr. Pearson, patting her hand.
âI know it. But saying good-bye always makes me feel so sad.â
âIf there are no other questions,â said the Professor, âweâd better get everything aboard.â
They turned to the mountain of equipment. In addition to the material they needed for their camps, there were numerous cans of gasoline, and a rubber raft with a box of emergency equipment.
They got the gasoline aboard first, and then the Professor put his hand on a large packing case. âIâm afraid this wonât go through the door,â he said. âWhat on earth is it, anyway?â
âThe two portable cookstoves we decided on,â said Dr. Grimes.
âHm. This plane carries a little over a thousand pounds. With three hundred pounds of gasoline, for emergencies, weâre dangerously close to the load limit.â
Danny said, âWhy not just leave them behind, Professor? We can build a fireplace.â
âI only agreed to them for your sake,â growled Dr. Grimes. âI can do without them very well.â
âThat suits me,â said the Professor, âLetâs move them aside.â
âAs far as that goes,â Dr. Grimes continued, âwe donât need air mattresses, or pillows, either.â
âI agree,â the Professor said. âAnd since the islands are near the equator and will be quite warm, we can do without tents. After all, the most important part of adapting to a desert island should be making oneâs own shelter.â
âLeave them behind then,â cried Dr. Grimes. âIt will only make it easier for me to win.â
âHere! Wait a second,â Mr. Pearson said. He stepped between the two scientists and held up his hands. âIf you two practical men go on this way youâll find yourselves on those islands with nothing but loincloths and hunting knives, like a character in a TV jungle story. We donât care so much about your comfort, but Iâm sure Mrs. Dunn feels as my wife and I doâwe want our boys to survive.â
That put an end to the competition, and they packed the rest of the gear away in the plane. At last they were ready to depart. Joe hugged his mother and father. Danny gave his mother a last embrace, and whispered, âDonât worry, Mom. Weâll be all right. Itâll just be a swell vacation.â
âIâm not really worried,â said Mrs. Dunn, with a wistful smile. âAfter all, youâve gone camping almost every summer. Just be careful. Do try not to get wet or chilled. Andâlook after Mr. Bullfinch, dear. He is a very important scientist, but he doesnât have quite as much experience in camping as you do.â
Danny was flattered. âI will,â he promised earnestly.
He gave his mother a last kiss, and followed Joe into the plane. The scientists, after shaking hands all around, took their seats at the controls. The twin motors roared, and the plane slowly taxied down the runway.
* * * *
Since the Cessna was only a small plane, as private planes go, the two scientists had decided to make the trip over land as much as possible. They flew to Brownsville, Texas; then over Mexico and Central America, keeping to a schedule of between five and six flying hours a day. At night, too tired for sightseeing, they slept in hotels near the airfields where they landed for refueling and checkups. The evening of the fifth day found them within a hundred miles of their goal.
They were flying down the west coast of South America, with the towering ranges of the Andes Mountains on their left and the Pacific