She stared at his outstretched right hand, slowly extended her own toward it, shook it up and down exactly once, then quickly dropped it.

He chuckled and gulped some lemonade. "I'm a biology student. Been working at Wood's Hole the first part of the summer. But now I'm here to do research in marine ecology—that's sort of sea-life patterns—of the in-shore islands. Under the direction of Professor Kesserich. You know about him, of course?"

She shook her head.

"Probably the greatest living biologist," he was proud to inform her. "Human physiology as well. Tremendous geneticist. In a class with Carlson and Jacques Loeb. Martin Kesserich—he lives over there at town. I'm staying with him. You ought to have heard of him." He grinned. "Matter of fact, I'd never have met you if it hadn't been for Mrs. Kesserich."

The girl looked puzzled.

Jack explained, "The old boy's been off to Europe on some conferences, won't be back for a couple days more. But I was to get started anyhow. When I went out this morning Mrs. Kesserich—she's a drab sort of person—said to me, 'Don't try to sail to the farther islands.' So, of course, I had to. By the way, you still haven't told me your name."

"Mary Alice Pope," she said, speaking slowly and with an odd wonder, as if she were saying it for the first time.

"You're pretty shy, aren't you?"

"How would I know?"

The question stopped Jack. He couldn't think of anything to say to this strangely attractive girl dressed almost like a "flapper."