“How would you like to live in Looking-glass House, Kitty? I wonder if
they’d give you milk in there? Perhaps Looking-glass milk isn’t good to
drink—But oh, Kitty! now we come to the passage. You can just see a
little _peep_ of the passage in Looking-glass House, if you leave the
door of our drawing-room wide open: and it’s very like our passage as
far as you can see, only you know it may be quite different on beyond.
Oh, Kitty! how nice it would be if we could only get through into
Looking-glass House! I’m sure it’s got, oh! such beautiful things in
it! Let’s pretend there’s a way of getting through into it, somehow,
Kitty. Let’s pretend the glass has got all soft like gauze, so that we
can get through. Why, it’s turning into a sort of mist now, I declare!
It’ll be easy enough to get through—” She was up on the chimney-piece
while she said this, though she hardly knew how she had got there. And
certainly the glass _was_ beginning to melt away, just like a bright
silvery mist.

In another moment Alice was through the glass, and had jumped lightly
down into the Looking-glass room. The very first thing she did was to
look whether there was a fire in the fireplace, and she was quite
pleased to find that there was a real one, blazing away as brightly as
the one she had left behind. “So I shall be as warm here as I was in
the old room,” thought Alice: “warmer, in fact, because there’ll be no
one here to scold me away from the fire. Oh, what fun it’ll be, when
they see me through the glass in here, and can’t get at me!”

Then she began looking about, and noticed that what could be seen from
the old room was quite common and uninteresting, but that all the rest
was as different as possible. For instance, the pictures on the wall
next the fire seemed to be all alive, and the very clock on the
chimney-piece (you know you can only see the back of it in the
Looking-glass) had got the face of a little old man, and grinned at
her.

Through the Looking-Glass, and What Alice Found There, Chapter 1 - Looking-Glass House