As the boys tramped on they passed a number of small milk carts bringing barrels of fresh, rich milk into the city. The milk had been sent down from the high mountain pastures, where the cattle spend the summer months.
Each milk cart was drawn by two strong dogs and a man. The dogs seemed very proud of their work. They knew every house where they must stop to leave the morning's milk.
In a few minutes the party was crossing a queer, crooked bridge over the river. It is called the Chapel Bridge. On its roof and walls there are more than one hundred and fifty pictures, which were painted a long, long time ago.
Right beside the bridge, standing in the river, is a very old stone tower. The schoolmaster said that this tower was probably once used as a lighthouse.
The Overall Boys were very much interested in the quaint old covered bridge, but they were even more interested in some beautiful white swans swimming in the water below it.
"The swans are hunting for their breakfast," said Joe. "I am going to give them one of my nice rolls."
Then Joe ran quickly through the bridge and down to the edge of the river. He took one of the fresh, long rolls from his knapsack and broke it into small bits, which he threw into the water.
He took one of the fresh, long rolls from his knapsack and fed the swans on the river