        He had two books left in his bag, and couldn’t decide which one to present first.  On one hand, he wanted to be sure they got the book on anatomy, since he was certain that would reduce the chance of himself—or anyone else—becoming an unwilling test subject.  The down side was that he didn’t know half the words in the book, and he could hardly explain it to her here on the beach.  Her companions might know what to make of it, though.  Since their outer appearance was roughly similar to earthly beings, perhaps their insides were, too.  They must have doctors aboard their ship.