“I think the most wonderful brick work I ever saw,” said Mildred, “was in the arch of a big sewer. I couldn’t tell why the bricks didn’t all fall down. My father said the mortar held them.”

“Why, if it weren’t for bricklayers, and cement workers, and stone masons, we should be without lots of things!” exclaimed Harry. “Just imagine it, if you can.”

“That’s so,” said Wallace. “Let’s count what we know of that they build for us—sewers, bridge piers,—go on, Mildred.”

“Pavements,” added Mildred.

“Houses and chimneys,” said Ruth.

“Foundations for houses,” said Harry.

“Here comes father!” cried Ruth suddenly; and all the children ran to meet him.

“We’ve been talking about how it would be if there were no bricklayers, or stone masons, or cement workers, father,” said Wallace.

“I’m glad to hear that,” said Mr. Duwell. “I was thinking very much the same thing as I walked home so soon after such a heavy rain without getting my feet wet.