roblem dawned on him. He had made several
trips to the store this week and each time put away Mr. Bartlett's
money in bills and small change. There must be money enough up attic
in that white shoe to change a five and probably a ten. Yes, Jerry was
sure he could change a ten. "I can make my own change," he thought
happily. And suddenly the charge account seemed a good scheme again.

"You look mighty pleased with yourself, Jerry," said his mother.

"I just thought of something."

"What?" asked Cathy.

"I'll tell you sometime," Jerry promised.

"Why does Jerry have to act so darned mysterious lately?" Cathy
complained to her mother.

"A boy has a right to keep a few things to himself," said Mrs. Martin.

Jerry was grateful to his mother for taking his part. "When I get that
candy from Bartlett's," he thought, "I won't forget that I've promised
the first piece to Andy. But my mother will get the next piece."

Jerry thought of his mother reaching in the box for a pink mint and
smiled.

"You're up to something. I can tell it by the way you look," remarked
Cathy.

He would have to be on his guard against Cathy, Jerry realized. Up
till now he had found it almost impossible to keep a secret from his
twin sister.

"Want me to wipe away your tears?" he jibed. It seemed mean to say
something on purpose to make Cathy mad but that would take her mind
off being curious.

4

No Safe Hiding Place

The next week was not as trying to Jerry as the week before, now that
he was able to make change up attic. Yet it grew increasingly
difficult to dodge Cathy. Time after time she caught up with him
either coming up or going down the attic stairs.

"What are you doing up attic?" she kept asking.

"Nothing," he would say. Or, "Don't you wish you knew?" He even told
her that she would know all there was to know about it in less than a
month, that is, if there were anything to know. This last statement
was the truth, though Cathy did not believe him. She kept hounding
him.

On Saturday, though it was a good day for baseball, Jerry remembered
his promise to take Andy to see the "quiet" animals. Since their
mother did not have time to drive them to town, they took a bus. It
was a short walk from the bus stop to the Museum of Natural History,
one of the buildings of the Smithsonian Institution, but Jerry knew
the way.

Although the Smithsonian had just opened, there were already two big
buses unloading at the front d