"You can make up your mind he has some scheme or other," answered George.
The Professor really did have a scheme, for the first thing he consulted Harry about was a plan to make some small molds in two parts, out of brass, from a plaster paris disk which he had carved out.
"What is that for?" asked Harry, laughing.
"That is to make one of the first coins from our mint," he answered, smiling.
A sample of the coin is shown.
"What is the hole in the middle for?"
"So they can be strung on a cord, and thus provide a means for keeping them."
"That is the first time I ever heard of that plan."