"Don't we girls matter?" demanded Mollie.

"Oh, well, I'll put some raw beefsteak on it when I get to the cabin. I've heard that's good. Jake caught me a hard one in the eye."

"Fighting! Disgraceful!" murmured Will's sister.

"It was the best way out—snowballs," said Allen in a low voice, while Will and Frank were comparing notes. "It might have been more serious only for that. It was because they set the trap that Amy was caught in."

"Oh, well then, I'm glad they did fight—with snowballs," returned Grace in a different tone.

The big box had been unloaded in front of the cabin when the boys arrived, and while Grace and Mollie went in to talk to Betty and Amy, the boys proceeded to get out the motor.

As Will had said this was one taken from a motorcycle. It was of two cylinders, and powerful. The boys planned to set it in the after part of the cockpit of the ice boat, and take off the sail. The motor would revolve a wheel at the stern, the wheel having spikes all around the rim. These spikes would dig into the ice and thus send the boat ahead. A lever was provided so that the spiked wheel could be pushed down lightly or hard on the ice, thus regulating the speed of the queer looking craft. The Spider could be steered as before, by moving the rear runner.

"Now we'll show you some sport!" cried Will, when he had seen that all the parts of the motor were there. "We'll go some, now!"

But if the boys had hoped to try their new craft that day they were disappointed, for there was more work about installing the motor than they had calculated on. The girls grew tired of waiting, and strolled over to the village, the day being pleasant. They met Mr. Blackford coming from the depot, he having returned to complete his visit with the boys.

He looked rather tired and discouraged, which prompted Betty to ask in a low voice: