addy Blake.

"Don't be afraid!" called the engineer, laughing. "He's so gentle he
wouldn't hurt a baby!"

And how strangely the dog was acting! He would jump up first on Hal,
and then on Mab, trying to lick their faces and hands with his red
tongue.

"Oh dear!" cried Mab, who was a little bit frightened.

"He won't hurt you!" exclaimed the engineer. "Here, Spot!" he called.
"Leave the children alone. Be good, Spot!"

But the dog would not mind. He jumped up on Hal, barking as loudly as
he could, and wagging his tail so hard that it is a wonder it did not
drop off. The animal seemed wild with delight.

"Why! Why!" cried Mab, as she looked carefully at the dog when he
stood still a moment to rest after all the excitement. "That dog looks
just like our Roly-Poly, only Roly was white and not spotted black and
white," said Mab.

"Well, when I got this dog he was all white," explained the engineer.
"He got spotted black by accident."

"I wonder if that could be Roly?" spoke Daddy Blake thoughtfully.
"Here, Roly-Poly!" he called. "Come here, sir!"

In an instant the dog made a jump for Daddy Blake, barking joyfully,
and almost turning a somersault.

"I believe it is Roly!" shouted Hal. "It's our dog!"

"But how could it be?" asked Mab. "Roly was lost under the ice."

"And that's just where I got this dog," the engineer explained. "Out
from under the ice. One day, after the first freeze this winter, I was
Balking along a little pond. I came to a thin place in the ice, and
looking through, from the shore where I stood, I saw a little white
dog down below, just as if he were under a pane of glass.

"I broke the ice with a stick and got him out. I thought he was dead,
but I took him home, thawed him out, gave him some hot milk, and soon
he was as lively as a cricket. And I've had this dog ever since. When
I came here to work at ice cutting I brought him with me."

"But you said he was pure white when you got him out," said Daddy
Blake wonderingly.

"Yes, that's right," answered the ice engineer. "So he was. And how he
got spotted was like this. I was blacking my boots one day, and I left
the bottle of black polish on a low bench. The dog grabbed it, playful
like, and the black stuff spilled all over him. That's how he got
spotted. He was worse than he is now, but it's wearing off."

"Then I'm sure this is our Roly-Poly!" cried "Oh, you dear Roly!" she
cried, and the spotted poodle dog tried to climb up in her a