Clouds of Witness by Dorothy L Sayers

O, whan he came to broken briggs He bent his bow and swam, And whan he came to the green grass growin' He slacked his shoone and ran. O, whan he came to Lord William's gates He baed na to chap na ca', But set his bent bow till his breast, An lightly lap the wa'. - Ballad of Lady Maisry

Lord Peter peered out through the cold scurry of cloud. The thin struts of steel, incredibly fragile, swung slowly across the gleam and glint far below, where the wide country dizzied out and spread like a revolving map. In front the sleek leather back of his companion humped stubbornly, sheeted with rain. He hoped that Grant was feeling confident. The roar of the engine drowned the occasional shout he threw to his passenger as they lurched from gust to gust.