John Buchan,
The Thirty-Nine Steps — Chapter Five…
“ I sat quite still and hopeless while the beat grew louder. Then I saw an aeroplane coming up from the east. It was flying high, but as I looked it dropped several hundred feet and began to circle round the knot of hill in narrowing circles, just as a hawk wheels before it pounces. Now it was flying very low, and now the observer on board caught sight of me. I could see one of the two occupants examining me through glasses. Suddenly it began to rise in swift whorls, and the next I knew it was speeding eastward again till it became a speck in the blue morning. ”
