Roumann, when he had taken
his seat at a small table and spread out his plans in front of
him, "I am only going to sketch briefly, for you and your young
assistants, what I propose. As I have said, we will need a
projectile, two hundred feet long and about ten feet through in
the thickest part. In that we will build sleeping and living
apartments, lacks to store the air which we will have to breathe
while traveling through space, other tanks for water, a
compartment for food, another for scientific instruments, and we
will need a comparatively large space for my machinery."
"Why will it take up so much space?" asked the professor. "I
thought you said the new power required only a small machine to
generate it."
"That is true, but you see we will have to carry two kinds of
machines."
"Two? Why is that?"
"Because we are going to travel through two, and perhaps three,
different mediums. We are going to shoot through the atmosphere
of the earth; then through the vast region beyond that, filled
with what is called ether."
"And is that different from our atmosphere?" asked Mark.
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