In paper underwear and three woolen sweaters; in paper socks with fleece-lined boots; with four pairs of mittens—paper, silk, wool, fleeced leather—and wool-edged goggles to keep his eyeballs from freezing, Pilot Jean Callizo climbed up and up from Le Bourget airdrome, near Paris, in his specially fitted altitude plane. It was late afternoon, with a high ceiling (cloud level). Picking a hole at 2,000 metres (about 6,600 ft.) Pilot Callizo steered up for "the edge of heaven." Beyond the clouds was fair weather.

Below, cities and countryside became indistinguishable. The earth looked...

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