water-beetle, and an earthworm, and a leaf, and a root, and a
magnet--even a lump of chalk, and more. One can see and smell and touch
and taste a sound, as well as hear it, and _vice versa_. It is very
simple, though it may not seem so to you now.

And the sounds! Ah, what sounds! The thick atmosphere of earth is no
conductor for such as _they_, and earthly ear-drums no receiver. Sound
is everything. Sound and light are one.

* * * * *

And what does it all mean?

I knew what it meant when I was there--part of it, at least--and should
know again in a few hours. But this poor old earth-brain of mine, which
I have had to put on once more as an old woman puts on a nightcap, is
like my eyes and ears. It can now only understand what is of the
earth--what _you_ can understand, Gogo, who are still of the earth. I
forget, as one forgets an ordinary dream, as one sometimes forgets the
answer to a riddle, or the last verse of a song. It is on the tip of the
tongue; but there it sticks, and won't come any farther.

Remember, it is only in your brain I am living now--your earthly brain,
that has been my only home for so many happy years, as mine has
been yours.

How we have nestled!

* * * * *