pheres seemed to be made
of wood, a green, sap-filled, unseasoned wood. The scene was visible
for a few seconds, and vanished suddenly as they walked on. This
astonished them; so they stepped back a pace or two and saw it again;
and as they moved on, it disappeared again.

* * * * *

Then there was a great stretch of water in which the backs of huge
monsters rolled and from which a hot wind blew for a few instants
until they passed on and the scene vanished. There was a short walk
with nothing but emptiness, and then there appeared huge, oblique,
cubistic looking rows of jagged rocks in wild, dizzy formations that
didn't look possible; and farther on, after another interval of
emptiness, a tangle of brown, ropey vines with black-green leaves on
them, an immense space filled with serpentine swinging loops and
lengths of innumerable vines. Several loops projected so near them
that they could have reached out and touched them had they wished.

"This is too much for me!" Phil gasped. "Have we gone crazy? Or did
he kill us, and is this Purgatory?"

Ione smiled and shook her little head in which she had a goodly store
of modern mathematics stored away.

"These must be glimpses of other 'spaces' besides our own space. If we
could see in four dimensions we could see them all spread out before
us. But we can only perceive in three dimensions; therefore, as we
walk through hyperspace, past the different 'spaces' which are ranged
about in it, we get a glimpse into such of them as are parallel with
our own space. Can you understand that?"

"Oh, yes," groaned Phil. "It sounds just about like it looks. But,
don't mind me. Go on, have your fun."

"I've been thinking about those wooden spheres," continued Ione. "I'm
sure they must be sections of trees that are cut crosswise by our
'space;' they grow in three dimensions, but only two of them are our
dimensions and a third is strange to us. We see only three-dimensional
sections of them, which are spheres. There is more of them, that we
cannot see, in another dimension."

"Yes, yes. Just as plain as the Jabberwock!"

"Look! There's a real Jabberwock!" exclaimed Ione.

On ahead of them they saw a number of creatures that seemed to be made
of painted wooden balls in different colors, joined together.

"Tinkertoys!" exclaimed Phil. "Live ones! Big ones!"

The animals, though they looked for all the world as though they were
made of painted wood,