She was a widow and loved Protheroe minimus best of her three sons. The others had taken prizes and were fair fliers at school; but Protheroe min. was useless except at running. So, woman-like, just because he couldn't get a prize anyhow, his mother was set on his doing so, and promised him rare rewards if he would only work extra hard, or be extra good, or extra something, and so scare up a blue book with a gold owl at any cost.

Well, if you have a financial mind, you will see at a glance that here was a possible opportunity. At least, so it looked to me. Because on the one hand was young Mayne, always fearfully hard up and always getting prizes at the end of each term as a matter of course; while on the other hand was Protheroe min., never hard up but never a scholastic success, so to say, from the beginning of the term to the end--and, of course, never even within sight of a prize of any sort.

Here it seemed to me was the whole problem of supply and demand in a nutshell; and the financier instinct cried out in me, as it were, that I ought to be up and doing.

So I went to young Mayne and said that I thought it was a frightful pity all his great skill was being chucked away, and bringing no return more important than the mournful things that he won as prizes. And he said:

"A time will come, Mitchell."

And then I told him that a time had come.

"I know you sell your prizes for a few bob at home, and that you think nothing of them," I said. "But I had a bit of a yarn with that kid Protheroe yesterday, and it seems that what is nothing to you would be a perfect godsend to him. You may not believe it, but his mother, who is a bit dotty on him, has promised him five pounds if he will bring home a prize."

"Five pounds!" said Mayne. "The best prize old Dun ever gave wasn't worth five bob."

"She doesn't want to sell it--she wants to keep it for the honour and glory of Protheroe min.," I explained. "And the idea in my mind in bringing you chaps together for your mutual advantage was, firstly, that you should let Protheroe have one of your prizes to take home in triumph to his mother; and, secondly, that he should give you a document swearing to let you have two pounds of his five pounds at the beginning of next term."

Mayne was much interested at this suggestion, and, knowing that he must be a snip for at least two prizes, if not three, at the end of the summer term, he had no difficulty whatever in falling in with my scheme.