the aisle,
across the vestibuled platform, through the next car, and then into the
diner.

There were quite a number of passengers still seated at the different
little tables. A soldierly looking Penguin sat at one and a few tables
beyond a motherly looking Seal with a baby boy Seal at her side was
just finishing some delicious looking pink water ice.

Mary Louise and the Mermaid sat down at the nearest table and looked
over the menu. It was great fun selecting what they wanted, and when
they had finished their water ices they felt that they had dined most
sumptuously.

They then returned to their seats and looked out of the window for a
time. Strange sights met their eyes as the train rushed on. There
were no telegraph poles to count, nor cows to see grazing in green
meadows. Instead, however, were numerous fish swimming here and there,
some of gorgeous coloring, others of white or silver hue. Hills and
valleys of sand, as well as long meadows of seaweed, stretched away for
miles and miles. Strange-looking sea animals crawled close to the
rushing train. If they came too close the suction of the water drew
them along until they disappeared beneath the car.

As darkness settled down over the quiet deep, Mary Louise turned from
the window with a sigh. "I feel sleepy already," she said, "and it's
only supper time!"

"We'll tell the porter to make up our berths," said the Mermaid
Princess. "He can do it while we are having our supper in the dining
car."

On their return they found their berth in readiness. Soft green
seaweed curtains hung gracefully to the floor, one of them being drawn
aside, showing a little white bed. It looked as comfortable as her own
little bed at home, Mary Louise thought.

It took the two little mermaids but a few minutes to undress, and as
soon as their tired heads touched the pillow they were sound asleep.

Softly the seabells are ringing away,
Dipping and dripping and white with the spray,
Ding-dong, and ding-dong, and ding-dong, so deep,
The seabells are singing me softly to sleep.

Over and over again in her dreams little Mary Louise repeated this
song. Then suddenly the bells seemed to change their tune. They
clanged out wildly until a sudden loud crash awoke her with a start.
The engine whistle was sending forth loud, warning cries. The Mermaid
Princess began to tremble with fright.

"What do you suppose is the matter?" she whispered.

"I'm sure I don't