"I find, for instance," the first man went on, "that a
drop of water is filled with little...with little...I
forget just what you call them...little--er--things,
every cubic inch containing--er--containing...let me
see..."

"Say a million," said the other thinker, encouragingly.

"Yes, a million, or possibly a billion...but at any
rate, ever so many of them."

"Is it possible?" said the other. "But really, you know
there are wonderful things in the world. Now, coal...take
coal..."

"Very, good," said his friend, "let us take coal," settling
back in his seat with the air of an intellect about to
feed itself.

"Do you know that every ton of coal burnt in an engine
will drag a train of cars as long as...I forget the
exact length, but say a train of cars of such and such
a length, and weighing, say so much...from...from...hum!
for the moment the exact distance escapes me...drag it
from..."

"From here to the moon," suggested the other.

"Ah, very likely; yes, from here to the moon. Wonderful,
isn't it?"