“He guides just like a real horse or a boat,” said Laddie.  Of course there was no bit in Zip’s mouth, as there is in the mouth of a horse, for dogs have to keep their mouth open so much, to cool off when they are hot, that a bit would be in the way.

In the soap box Laddie and Russ took their places.  Daddy Bunker handed them the lines and let go of the dog’s head.

“Gid-dap!” called Russ.

“Go fast!” ordered Laddie.

“Hold tight and don’t get spilled out!” begged Mother Bunker.

“We will!” promised Laddie.

Russ was driving and he didn’t feel much like talking just then.  He had to give all his attention to Zip.

Away trotted the dog, pulling after him the cart with the two boys in it.  Over the grass he went, and when Russ saw that the dog seemed to know just what to do, and didn’t show any signs of wanting to turn around and upset the cart, Russ turned his steed toward the path.

“We can go faster here, where it isn’t so soft,” he said.

And Zip did pull the cart along at good speed.  Around and around on the gravel paths he pulled the boys, and he seemed to be having as much fun from it as they were.

“He goes very nicely,” said Daddy Bunker, smiling.

“I’d like a ride in the cart myself, if I were small enough,” said the children’s mother, laughing.

“Yes, Zip is a good dog for the six little Bunkers to play with,” observed Grandma Bell.  “They’ll have a good time with that cart.”

“Give us a ride!  Give us a ride!” begged Rose.

“Yes, can’t you take some of them for a turn now?” asked Mrs. Bunker.

“As soon as Laddie and I go around once more,” promised Russ.

Zip didn’t seem a bit tired, though he had run fast part of the time.  Laddie got out and this made room for Rose and Violet, for Daddy Bunker said Russ had better stay in and do the driving.

“But I’m going to drive after a while? when I learn how,” declared Rose, and they said she might.

Zip gave Russ, Rose and Vi as nice a ride as he had given the two boys, and the girls clapped their hands in glee and laughed joyously as they rattled along over the paths.

Then came the turn of Margy and Mun Bun, and they liked it more than any one, I guess, and didn’t want to get out of the cart.

“But Zip is tired now,” said Mrs. Bunker.  “See how fast he is breathing, and how his tongue hangs out of his mouth,” for the dog had been pulling the cart for over an hour.  “Get out, Mun and Margy, and you may have another ride after Zip rests.”

The little children loved the dog, and wanted to be kind to him; so, when their mother told them this, they got out of the cart, and Zip was unharnessed and given some cold water to drink and a nice bone on which to gnaw.

“If he was a horse he could have oats,” said Russ.  “But I guess he likes a bone better.”