There was the chance, the odd chance, that the rocket somehow might yet return to Earth. It might describe a circle, an arc, finally begin to fall back. If it did so, the parachute would operate and perhaps land Robin in safety.

Somehow it didn't seem likely to Robin, yet that chance existed. If so, it would have to return to Earth before a full starvation period could result in death. Robin had read somewhere that one could go without food for as much as thirty days, but without water for not more than seven or eight. If the rocket were describing an arc or a parabola, then it would surely start its return within less than that week's leeway.

With this in mind, Robin unwrapped the candy bar and ate it. The second one he would save as long as possible. But what about water?

The squeaking of the test animals broke in on his thoughts. Surely they must have been supplied with some sort of food for their flight? Robin switched himself around to face the floor and began to dig at the padding there. He managed to loosen it, pull it to one side, revealing the floor of the compartment. As he had hoped, it was not a metal plate. His own chamber, the one for the instruments, was not a section in itself but only part of a section paneled off by braced plasterboard. And what was more there were already holes drilled through it so that the air in both sections would be equalized.

This answered another question Robin had been trying to avoid. How was it the air was remaining fresh now, though it had gone stale while he was hiding? Apparently there was a small supply of oxygen operating automatically in the animal section that seeped through into the upper compartment too. Evidently once the rocket went into flight this started to work and would continue for the originally calculated period.

Robin dug his fingers into the openings and pulled. Gradually the plasterboard bent away and opened a space into the section below. He looked down, using his flashlight.

There were two cages below, well padded. In one, two little brown monkeys clung together floating just above the floor and looking terrified. They chattered when they saw him, but remained tightly locked in each other's arms. In the other, four small rabbits were placidly nibbling bits of lettuce, although one rabbit was upside down, another sideways on the side of the cage.

There were a couple of small boxes set in each cage, and Robin could see that they dispensed food and water to the animals at presumably regular intervals. Robin reached down next to the monkeys' cage and started to work loose the small water holder there. He found it slid out of place once he turned the holding bolt. As he drew the little flask upward, one of the monkeys made an effort to nip his finger, but he withdrew it in time.

The water flask drawn up into Robin's compartment made him feel better. This would make his stay a little more comfortable for a while. He felt sorry for the monkeys, who might go thirsty now, but he had a suspicion that the two little beasts were probably too hysterically frightened to eat or drink anyway. Robin wet his throat a little.

He looked back down, reached out, and investigated the food compartment. Sure enough, there were several bananas in the monkeys' food container. They would do also.