they were jerked and
tossed about as Zip ran after the rabbit.

"Oh, what's the matter?" asked Laddie, who had not seen the bunny. "Did a
bee sting Zip?" This had happened once, and the dog had run around yelping
and barking, no one knowing what was the matter with him for a while.

"No, I don't believe it was a bee," answered Russ. "It was a rabbit. Whoa,
Zip! Whoa!" called the little boy, pulling on the leather lines.

But Zip did not stop. Very few dogs would, when once they had started to
run after a rabbit.

[Illustration: "BOW-WOW!" BARKED ZIP, AND ON HE RAN, FASTER AND FASTER.

_Six Little Bunkers at Grandma Bell's_]

"Bow-wow! Bow-wow!" barked Zip, and on he ran, faster and faster. He
seemed to enjoy it very much.

It was a good thing the woods were not of the roughest kind just at this
place, for otherwise the dog-cart would have been smashed to pieces. As it
was it bumped and swayed from side to side, and Laddie and Russ had all
they could do to keep from bouncing out.

"Whoa! Whoa!" called Russ, but Zip paid no attention. Nor did he care how
much the little boy driver pulled on the lines. As Zip had no bit in his
mouth to hurt him when it was pulled on hard, he was not going to stop.
The leather muzzle around his nose did not hurt him as a bit would have
done.

I don't know just how far Zip would have run after the white rabbit, if
something had not happened to put an end to the chase. The rabbit,
probably getting tired of being run after, suddenly darted down inside a
hole. This was his burrow, or underground house, and once down in that,
the rabbit knew no dog could get him.

So into his hole, as if he were going down cellar, went the bunny. And
Zip, with a howl of disappointment, saw the rabbit disappear. The dog
stopped at the outside edge of the hole, and barked as loudly as he could.
Perhaps he thought he was giving the bunny an invitation to come up.

But the bunny never answered. They don't bark, but they can make a funny
little squeaking sound at times. This one didn't do even that.

"He's gone, Zip! You can't get him," said Russ.

"Bow-wow," answered the dog, almost as if he understood what Russ said,
and as though he answered:

"Yes, he's gone, but I'll get him the next time."

"He gave us a good ride, anyhow, didn't he, Russ?" asked Laddie. "I guess
he rode us 'most a mile."

"Half a mile, anyhow," answered Russ. "And oh, look, Laddie! We can see
Green Pond!"

They were up on