“Maybe it was the elephant’s trunk they saw,” suggested Vi.  “Do you think it was?”

“Elephants don’t live in the lake,” decided Rose.  Then she started down toward the shore where Mun Bun and Margy had been paddling in their bare feet.

In truth, she did not want to go very much.  That was why she had done so much talking before she started.

“Where are you goin’?” asked Violet.

“I’m going to see what it is!” declared Rose.

“Oh-o-o-o!” exclaimed Vi.  “Maybe it’ll bite you.  Did it have a mouth, Mun Bun?”

“I didn’t see its mouth, but it had a flappy tail.”

“I’m going to call mamma!” exclaimed Vi, “Don’t you go, Rose!”

But Rose was already halfway to the shore of the lake.  In another moment she called out: 

“Oh, I see it!  I see it!”

“What is it?” asked Mun, made brave by what he saw Rose doing, and he followed her.  Vi and Margy trailed after them.  “What is it?”

“It’s a big rat, that’s all, but it isn’t the kind of rats we saw the hired man catch in a trap at the barn.  It’s a nicer rat than that, and it’s eating oysters on a rock near the shore.”

“Oh, is it really eating oysters?” asked Vi.

“They look like oysters,” replied Rose.  “Oh, there he goes!” and, as she spoke, the animal, which did look like a rat, plunged into the water and swam away, only the tip of its nose showing.

“Tisn’t a bear,” said Rose, “and ’tisn’t an elephant.”

“Then what is it?” asked Vi.

Rose did not know, but when the children went to the house and told Grandma Bell about it, she said: 

“Why, that was a big muskrat.  They won’t hurt you.  There are many of them in the lake, and in the winter the men catch them for their skins to make fur-lined coats from.  It was only a big muskrat you saw, Mun Bun.”

“And was he eating oysters?” asked Vi, who liked to know all about things.

“They were fresh-water clams,” said Grandma Bell.  “There are many of them in the lake, too.  The muskrats bring them up from the bottom in their paws, and take them out on a rock that sticks up from the water.  There they eat the clams.”

“Well, I’m glad it wasn’t a bear I saw,” put in Mun Bun.

“So am I,” said Mother Bunker with a laugh.  “But you needn’t be afraid—­there are no bears here.”

While this had been going on Laddie and Russ, with their father in the boat, had been having a good time.  They rowed up the lake, and once or twice Mr. Bunker let the boys take the oars so they might learn how to row.

“If you are going to be around the water,” said Mr. Bunker, “you ought to learn how to row a boat as well as how to swim.”

“I can swim a little,” said Russ.

“Yes, you do very well,” returned his father.  “And before we go back I must teach Laddie.”

“I like to wade in my bare feet,” said the smaller boy.