when I was on the farm."
"Let us walk up the hills and take a look around – now we are here," continued the senator's son. "If we see any rabbits' tracks we'll know they are on hand."
Dave agreed, and he, Roger, and Phil left the ice-boat, stating they would be back in half an hour.
"All right!" sang out Messmer. "We'll cruise around in the meantime. When we get back we'll whistle for you."
The tramp through the deep snow was not easy, yet the three chums enjoyed it, for it made them feel good to be out in the clear, cold atmosphere, every breath of which was invigorating. They went on silently, so as not to disturb any game that might be near.
"Here are rabbit tracks!" said Dave, in a low tone, after the top of the first hill was gained, and he pointed to the prints, running around the trees and bushes. "Shooting ought certainly to be good in this neighborhood."
From one hill they tramped to another, the base of which came down to the river at a point where there was a deep spot known as Lagger's Hole. Here the ice was usually full of air-holes and unsafe, and skaters and ice-boats avoided the locality.
From the top of the hill the boys commenced to throw snowballs down on the ice, seeing who could throw the farthest. Then Phil suggested they make a big snowball and roll it down.
"I'll bet, if it reaches the ice, it will go clear across the river," said the shipowner's son.
"All right, let's try it," answered Dave and Roger, and the three set to work to make a round, hard ball. They rolled it around the top of the hill until it was all of three feet in diameter and then pushed it to the edge.
"Now then, send her down!" cried Phil, and the three boys gave a push that took the big snowball over the edge of the hill. Slowly at first and then faster and faster, it rolled down the hill, increasing in size as it progressed.
"It's getting there!" sang out Roger. "See how it is shooting along!"
"Look!" yelled Dave, pointing up the river. "An ice-boat is coming!"
All looked and saw that he was right. It was a craft from the Rockville academy, and it was headed straight for the spot where the big snowball was about to cross.
"If the snowball hits them, there will be a smash-up!" cried Roger.
"And that is just what is going to happen, I fear," answered Dave.
CHAPTER VI
WHAT A BIG SNOWBALL DID
As the ice-boat came closer the boys on the hill saw that it contained four persons, two cadets and two young ladies. The latter were evidently guests, for they sat in the stern and took no part in handling the craft.
Dave set up a loud cry of warning and his chums joined in. But if those on the ice-boat heard, they paid no heed. On and on they came, heading for the very spot for which the great snowball, now all of six feet in diameter, was shooting.
"The ice is full of holes, maybe the snowball will drop into one of them," said Phil. But this was not to be. The snowball kept straight on, until it and the ice-boat were less than a hundred feet apart.
It was then that one of the cadets on the craft saw the peril and uttered a cry of alarm. He tried to bring the ice-boat around, and his fellow-student aided him. But it was too late, and in a few seconds more the big snowball hit the craft, bowled it over, and sent it spinning along the ice toward some of the largest of the air-holes.
"They are going into the water!" gasped Roger.
"Come on – let us see if we can help them!" returned Dave, and plunged down the hill. He took the course the big snowball had taken, and his chums came after him. More than once they fell, but picked themselves up quickly and kept on until the ice was gained. At the edge they came to a halt, for the air-holes told them plainly of the danger ahead.
"There they go – into the water!" cried Dave, and waiting no longer, he ran out on the ice, picking his way between the air-holes as best he could. Several times the ice cracked beneath his weight, but he did not turn back. He felt that the occupants of the ice-boat were in peril of their lives and that in a measure he was responsible for this crisis.
The river at this point was all of a hundred yards wide and the accident had occurred close to the farther side. The ice-boat had been sent to where two air-holes were close together, and the weight of the craft and its occupants had caused it to crack the ice, and it now rested half in and half out of the water. One of the cadets and one of the young ladies had been flung off to a safe place, but the other pair were clinging desperately to the framework.
"Oh, we shall be drowned! We shall be drowned!" cried the maiden in distress.
"Can't you jump off?" asked the cadet who was safe on the ice.
"I – I am afraid!" wailed the girl. "Oh, the ice is sinking!" she added, as an ominous sound reached her ears.
To the credit of the cadet on the ice-boat, he remained the cooler of the two, and he called to his fellow-student to run for a fence-rail which might be used to rescue the girl and himself. But the nearest fence was a long way off, and time, just then, was precious.
"Cut a couple of ropes!" sang out Dave, as he dashed up. "Cut one and throw it over here!"
The cadet left on the overturned craft understood the suggestion, and taking out his pocketknife, he cut two of the ropes. He tied one fast to the other and sent an end spinning out toward Dave and the cadet on the ice. The other end of the united ropes remained fast to the ice-boat.
By this time Phil and Roger had come up, and all the lads on the firm ice took hold of the rope and pulled with all their might. Dave directed the operation, and slowly the ice-boat came up from the hole into which it had partly sunk and slid over toward the shore.
"Hurrah! we've got her!" cried Phil.
"Vera, are you hurt?" asked the girl on the ice, anxiously.
"Not at all, Mary; only one foot is wet," answered the girl who had been rescued.
"Oh, I'm so glad!" And then the two girls embraced in the joy of their escape.
"I'd like to know where that big snowball came from," growled the cadet who had been flung off the ice-boat when the shock came. He looked at Dave and his companions. "Did you start that thing?"
"We did," answered Dave, "but we didn't know you were coming."
"It was a mighty careless thing to do," put in the cadet who had been rescued. "We might have been drowned!"
"I believe they did it on purpose," said the other cadet. He looked at the letters on a sweater Roger wore. "You're from Oak Hall, aren't you?"
"Yes."
"Thought you'd have some sport, eh?" This was said with a sneer. "Say, Cabot, we ought to give 'em something for this," he added, turning to his fellow-cadet.
"So we should," growled Cabot, who chanced to be the owner of the craft that had been damaged. "They have got to pay for breaking the ice-boat, anyway."
"Oh, Mr. Anderson, please don't get into a quarrel!" pleaded one of the girls.
"Well, those rowdies deserve a thrashing," answered Anderson. He was a big fellow,
