"Well, you just take an old box—we saw some of the kind I want down at the grocery store—and you put wheels on it."
"Where are you going to get the wheels?" asked Laddie.
Russ had to stop and think about that part. Then he happened to remember that he had seen two wheels from an old baby carriage out in the barn. Grandma Bell had once had a woman working for her who had a little baby, and this woman had kept the carriage at the Bell farmhouse. But after a while it broke, or wore out, and when the woman and her baby went away there were only two wheels of the carriage left.
"We can take them," said Russ, "and maybe we can find two more somewhere. We'll ask daddy or grandma."
"Say, it'll be lots of fun if we can make a dog-cart!" cried Laddie. "Could we really ride in it, do you s'pose?"
"Why, yes!" answered Russ. "Zip is strong enough to pull us both. Look at him pull that log. Feel how hard he pulls on the rope!"
The boys took hold of the rope and tried to hold back on it. But Zip was so strong that he dragged them along a little way, as well as the log. And Zip growled and snarled, pretending he was very angry.
"Look out!" cried Mother Bunker. "He might bite you!"
"Zip is only playing," said Grandma Bell. "He never bites. But what are you doing?" she asked Russ and Laddie.
"We're trying how hard Zip can pull, to see if he can pull us when we make a dog-cart," explained Russ.