em and no glass fronts. Russ considered them for a moment,
and then looked all about the room.

"I tell you what," he said, slowly. "You know when they took us to the
Sportsman's Show last week at Mechanic's Hall? Don't you remember about
that Eskimo igloo that they had built of ice in the middle of the
skating pond? Let's build an igloo like that, and get into it and keep
warm."

"O-oo!" gasped Vi, "how can you do that?"

"Where will you get any ice?" Laddie demanded.

"Goodness! it's cold enough in here without bringing in ice," announced
Rose with confidence.

"We won't build the igloo of ice blocks," said Russ quite calmly. "But
we'll make believe it is ice."

"I'd rather do that," Laddie agreed. "For make-believe ice can't be so
wet and cold as real ice, can it?"

"What you going to make your make-believe ice out of, Russ?" demanded
Vi, the exceedingly practical.

Russ at once set them all to work, clearing the middle of the room and
bringing up hassocks and small benches and some other articles that
could be used in the construction of the indoor igloo. He brought the
sections of the new bookcase, one piece at a time.

Russ really exhibited some skill in building up the walls of the hut in
the middle of the floor. When it was completed it was rather a tight fit
for all six of the little Bunkers to squeeze inside, but they did it.
And the activities of building the igloo had warmed even Mun Bun.

"You know," said Rose thoughtfully, "Eskimos live in these igloos and
eat blubber, and don't go out at all while it is snowing, same as it
does now."

"Why don't they go out?" asked Vi.

"Because it is cold," said Russ.

"And why do they eat blubber?"

"Because they are hungry," said Rose.

"What's blubber, anyway?" asked the inquisitive one. "Is it like candy?"

"It's more like candles," answered Russ, laughing.

Just then Laddie kicked excitedly.

"I bet I can make another riddle!" he cried.

"Now, you see, Russ Bunker?" Rose admonished. "Laddie has got that word,
too."

"Hey, stop kicking, Laddie!" cried Russ.

But in his excitement the boy twin had put his foot right through the
wall of the igloo! At least, he had kicked one of the boxes out of place
and the whole structure began to wobble.

"Oh! Oh! Oh!" shrieked Vi. "It's falling."

"Get Mun Bun out," gasped Rose, thinking first of all of the littlest
Bunker.

But just then the heaped up boxes came down with a crash and the six
little