"He glanced again at the water, smiling to himself.
"'There is another question I want to ask,' I said, 'if you don't mind.'
"'Of course not!' he said, warmly.
"'What are you digging for?'
"'Why, simply for exercise. The doctor told me I was killing myself with my sedentary habits, so I decided to dig. I don't know a better exercise. Do you?'
"'I suppose not,' I murmured, rather red in the face. I wondered whether he'd mention fossils.
"'Did Daisy tell you why we are making our papier-maché thermosaurus?' he asked.
"I shook my head.
"'We constructed that from measurements I took from the fossil remains of the thermosaurus in the Metropolitan Museum. Professor Bruce Stoddard made the drawings. We set it up here, all ready to receive the skin of the carcass that I am expecting.'
"We had started towards home, walking slowly across the darkening dunes, shoulder to shoulder. The sand was deep, and walking was not easy.