He tumbled off the seat, opened the locker, and had the portfolio open before him on the folding-table. It was full of drawings done in the peculiar flat style and conventional colours engineers adopt. And, in, addition there were some rather under-exposed photographs, obviously done by an amateur, at close quarters, of the actual machine's mutterings had made, in its shed near the Crystal Palace. Bert found he was trembling. “Lord” he said, “here am I and the whole blessed secret of flying—lost up here on the roof of everywhere.
“Let's see!” He fell to studying the drawings and comparing them with the photographs. They puzzled him. Half of them seemed to be missing. He tried to imagine how they fitted together, and found the effort too great for his mind.
“It's tryin',” said Bert. “I wi
