"I do want some of the cress," she said.
"So do I," declared the knight. But alas; as he stepped to the brink he went down—down—down—
"Help!" he shouted, merrily, in spite of the second foot bath within a few minutes.
But Nat kept on sinking, until what seemed like a joke soon assumed a serious aspect.
"Give us a hand," he called to Tavia. "I must have struck quick-sand."
Tavia ran to the side of the pool where the boy was imbedded. He had jumped right in, instead of feeling his way as Tavia had, to make sure of his ground.
"Take my hand," said the girl anxiously, but the effort necessary in reaching toward her only served to make the unfortunate youth sink farther down.
"I guess you'll have to go for help," he admitted finally, the danger of the situation forcing itself upon him.
"But suppose you should go under while I am gone?" faltered Tavia.
"Just pull that tree branch over to me," said Nat, "and I'll cling to that. This must be a glue spring. My, but it has a grip! There goes my shoe."