He put away his tools and the unused parts. He pointed to the machines he had already built. "This is what your father wanted, I think. After it's tested I'll ask you to put me ashore." He went below, where he fretted to himself. But no one came, either to inform him of Davis' reasons, or to tell him to do as he pleased. He felt like a child who isn't allowed to play with other children; who is arbitrarily excluded from the purpose and the excitement of his fellows. Thinking in such terms did not make him feel any better. His irritation increased. The _Esperance_ was engaged in an enterprise that these people considered very much worth doing. He'd joined them to accomplish it, and they wouldn't tell him what it was. He hadn't the temperament to be content with just following blindly. And somehow the fact that Deirdre was aboard and a participant in the secret made his exclusion an insult. He felt about Deirdre that urgent concern that a man may feel about one or two, or at most three girls during his whole lifetime. It wasn't a romantic interest, at this stage, but he wanted to look well in her eyes, and he was enormously interested in anything she said and did. If he left the _Esperance_ and ceased to know her, he knew he'd be nagged at by the feeling that he'd made a very bad mistake. He didn't want to stop knowing her. But he refused to be patronized. He saw an open book on the after-cabin table and glanced restlessly at it. There were three or four photographs and a newspaper clipping stuck into its pages. The book itself dealt with physics at post-graduate levels--which meant that it included a good deal about electronics. Still fuming, Terry glanced at the pictures. The first was of a spherical object made of transparent plastic and probably of small size. It had a number of metallic elements clearly visible through the transparent case. It looked as if it might be an electronic device itself, but there was no sign of lead-in contacts, and the parts inside made no sense at all. The second and third photographs were of a similar yet slightly different object. The fourth photograph was a picture of what looked like ocean water, taken from a plane. The horizon showed in one corner. The center of the picture was an irregularly-shaped mass of white. On close examination it appeared to be foam. But it looked as if it were piled up in masses above the surface. If the water around it was ocean--and it was--and the visible crest-lines were of waves--and they were--that heap of foam must have been hundreds of yards in diameter and piled many feet high on the surface. Foam does not form in such masses in the open sea. It would not last if it did. On the margin of this picture a date had been inked--three days before--and a position in degrees of latitude and longitude.