By and by the happy water-drop tired of his play, and looking up to
the clear sky above him thought he would like to have a sail on one of
the white floating clouds; so, giving a jump from the Ocean's arms, he
begged the Sun to catch him up and let him go on a journey to see the
earth.

The Sun said "Yes," and took ever so many other drops, too, so that
Aqua might not be lonesome on the way. He did not know this, however,
for they all had been changed into fine mist or vapor. Do you know
what vapor is? If you breathe into the air, when it is cold enough,
you will see it coming out of your mouth like steam, and you may also
see very hot steam coming from the nose of a kettle of boiling water.
When it is quite near to the earth, where we can see it, we call it
"fog." The water-drops had been changed into vapor because in their
own shape they were too heavy for sunbeams to carry.

Higher and higher they sailed, so fast that they grew quite dizzy;
why, in an hour they had gone over a hundred miles! and how grand it
was, to be looking down on the world below, and sailing faster than
fish can swim or birds can fly!

But after a while it grew nearly time for the Sun to go to bed; he
became very red in the face, and began to sink lower and lower, until
suddenly he went clear out of sight!

Poor little Aqua could not help being frightened, for every minute it
grew darker and colder. At last he thought he would try to get back to
the earth again, so he slipped away, and as he fell lower and lower he
grew heavier, until he was a little round, bright drop again, and
alighted on a rosebush. A lovely velvet bud opened its leaves, and in