"Every time we go out riding in our pony cart we'll look for your box," promised Bunny, and Mr. Tallman said that was very kind of them.

After the visitor had gone Bunny and Sue wanted to hitch Toby up again, and drive down to their father's dock to tell him about the new trick the pony could do. But Mrs. Brown said it would be better to let the pony rest awhile and tell Mr. Brown about him when he came home in the evening.

This Bunny and Sue did, and they took their father out to the barn and showed him how Toby could take the measure out from under the bushel basket, and drop it in the oat box.

"And maybe you can make him stand on his hind legs," added Bunny.

"I'll try," said Mr. Brown. And he did. And, surely enough, when the broomstick was held crosswise in front of him, up rose Toby on his hind legs, just as when Mr. Tallman had told him to.

It was about a week after this, and Bunny and Sue had learned to drive Toby quite well, that their mother called to them:

"Children, will you go to the store for me in your pony cart? I need some sugar for a cake."

"We'll get it, Mother!" answered Bunny, and he and Sue hurried out to the barn. With the help of the hired girl they hitched Toby to the cart, and soon they were driving down the street to the store, Splash, their dog, who was called that because he had once splashed into the water after Sue, who had fallen in, and pulled her out—But there! you can read all about that in the first volume of this series. So to go on: Splash went with them, now running on ahead and again lagging behind, barking and wagging his tail.

Bunny and Sue went in the store together to get the sugar, and, as they did not think they would stay very long, they did not fasten Toby's strap to a hitching post, as their father had told them they must always do. But as there were quite a number of customers in the store it was some little time before Bunny got what he wanted.

Then, as he and Sue started out to ride back home in their pony cart, they heard some one say: