"Only it wants some glass in the windows," said Ted, looking at the holes in the snow walls of the house.
"We don't need glass," immediately put in Tom.
"Why not?" asked Jan. "If we put wooden windows in we can't see through 'em."
"We can use sheets of ice!" cried Tom. "My father said that that's the way the Eskimos do up at the north pole. They use ice for glass."
"You can see through ice all right," said Ted. "But where could we get any thin enough for windows for our snow house?"
"All the ice on the pond and lake is covered with snow," added Lola.
"We can put some water out in pans," went on Tom. "If it's cold to-night it will freeze in a thin sheet of ice, and then to-morrow we can make windows of it for our snow house."
"Oh, that'll be fun!" cried Ted.
"It will be almost like a real house!" added Jan.
Mrs. Martin said, when the Curlytops asked her, that Tom's plan might work if the night turned cold enough to freeze. And as after dark it did get colder she put some water out in large shallow pans. In the morning the water was frozen into thin sheets of ice, clear as crystal, and Ted and Jan could see right through them as well as they could see through glass.