At one-thirty I was nearly seven miles above the
surface of the earth, and still ascending steadily. I found,
however, that the rarefied air was giving markedly less support to
my planes, and that my angle of ascent had to be considerably
lowered in consequence. It was already clear that even with my
light weight and strong engine-power there was a point in front of
me where I should be held. To make matters worse, one of my
sparking-plugs was in trouble again and there was intermittent
misfiring in the engine. My heart was heavy with the fear of
failure.
"It was about that time that I had a most extraordinary
experience. Something whizzed past me in a trail of smoke and
exploded with a loud, hissing sound, sending forth a cloud of
steam. For the instant I could not imagine what had happened.
Then I remembered that the earth is for ever being bombarded by
meteor stones, and would be hardly inhabitable were they not in
nearly every case turned to vapour in the outer layers of the
atmosphere. Here is a new danger for the high-altitude man, for
two others passed me when I was nearing the forty-thousand-foot
mark. I cannot doubt that at the edge of the earth's envelope the
risk would be a very real one.
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