So you see, Jack was turned out by the teacher, just as was Mary's lamb.

One bright day, when the ground was covered with snow, Father took
Johnnie Jones for a ride on his sled. They had been around the block
only twice when the clock struck two, and then it was time for Father
to go to his office.

"Oh! dear," said Johnnie Jones, "now I'll have no one to pull my sled.
I wish Jack could."

"Perhaps he can," Father answered. "When I come home to-night I'll make
some sort of a harness for him, and then to-morrow we shall see what he
can do."

That evening, with rope, straps, and Johnnie Jones's reins Father made
a very good harness, and the next day he hitched Jack to the sled. At
first Jack could not imagine what Father and Johnnie Jones wished him to
do. He allowed himself to be hitched to the sled, but every time Johnnie
Jones sat upon it, and said "Get up," Jack would jump about, and off
would roll Johnnie Jones into the snow. Then Jack would bark as much
as to say, "What are you trying to do, anyway?"

At last, after many trials, Father managed to hold Jack quiet until
Johnnie Jones was seated firmly on the sled, clasping a side with each
hand. Then Father, still keeping a tight hold of Jack, ran with him to
the corner and back several times. At last Jack began to understand what
was expected of him. The next day they tried again, and it was not long
before Johnnie Jones could drive the big dog without Father's help.
After a while Jack would even pull Johnnie Jones's sled to kindergarten
each morning, and then draw the empty sled home, after Johnnie Jones had