"Is Harry in trouble again?" asked his mother.

"No, this time it seems to be Sue," said Mrs. Brown. "I think she is stuck in the mud."

"Is that serious?" asked Mrs. Slater, for she had not been to the seashore enough to know anything about clam-digging.

"Oh, there is no danger," said Mrs. Brown. "They may get very muddy. But they have on their bathing suits, and can easily wash. However, we might walk over as near as we can go, so they may see us."

"Very well," agreed Mrs. Slater. "I don't want Harry frightened again to-day."

But she need not have worried. The children were laughing as Sue used the two boys like a pair of crutches to help her lift her feet from the muck. Soon she had pulled loose, and she held one foot out so she could see it.

"Oh, look!" cried the little girl. "There's so much mud on my foot I can't see my toes wiggle!"

And this was really so.

"It looks as if you had a black shoe on," added Bunny. "Come on now, you'd better step away from here if you don't want to get stuck again, Sue."

"And I'm getting stuck myself!" exclaimed Harry, as he felt one foot sinking. "Is it all like this on the clam flats?"