"Who is it?" asked Rose.
"It's Sammie Brown, the boy we met the other day when we went to Nantasket Beach," Russ explained. "He lives about two blocks from here, and I told him to come over and see us. Here he is now!" and he pointed to a boy, about his own age, who was coming up the walk.
"Hello, Sammie!" greeted Russ. "Want to blow bubbles?"
"Yes," was the answer, and a pipe was found for Sammie. He seemed to know how to use it, for he blew bubbles bigger than any one else.
"What's inside the bubbles?" asked Violet, who simply had to ask another question. "Is it water?"
"No, it's air," said Sammie. "If you could blow a bubble big enough to get inside of you could breathe the air, just like outside. Only when it was all breathed up you'd have to get more."
"Would you, really?" asked Rose.
"How do you know?" Violet questioned.
"'Cause my father's a sea captain, and he takes divers out on his boat and they go down after things that sink. The divers have air pumped to them, and they wear a big thing on their heads like a soap bubble, only it's called a helmet. This is pumped full of air for the diver to breathe."