Rover ran at the big, black dog and drove him back into his yard. Then he and John and Hobson and Bobby brought the frightened sheep together again and started them down the road.
"I wonder where we are taking the sheep," thought Bobby.
About ten o'clock, they came to a creek with a bridge over it. Across the bridge they drove the sheep. On the other side, Hobson stopped them and drove them to one side of the road. Farmer Hill tied Prince to the fence.
"Can you guess what we came for?" he asked.
Bobby looked all around. John and Hobson and Rover were driving the sheep into a pen at the edge of the creek. The pen was surrounded by a fence of rails, with a gate near the water.
Then the men put on the old clothes which they had brought in the buggy, and went into the pen among the sheep.
Bobby looked puzzled.
"Let's take the bell wether first," said Mr. Hill; and John grabbed the old sheep in spite of his ugly-looking horns.
They took him through the gate and started to pull him toward the water.
"Oh, Father, I know," shouted Bobby. "You are going to wash the sheep."