he lobby the night clerk came to meet them.

"I noticed that the name of Mr. Moustafa was on the message I gave you.
If you intend to visit him, you will have no trouble. His house is also
his office, and it is very well known. Just tell Hassan to take you to
Abd El Aziz Street."

The boys thanked him, somewhat relieved that Fuad Moustafa apparently
was so well known. Outside, Hassan was waiting. "Not so tired?" he
greeted them.

"Not too tired for a short trip," Rick said. "Can you take us to Abd El
Aziz Street?"

"Not far. Near El Mouski."

As Hassan drove off, at the usual high velocity, Rick asked, "Do you
know Fuad Moustafa?"

"Hear name," Hassan said. "But not know. What number street he live?"

Rick took the letter from his pocket, switched on the dome light, and
scanned it. There was no address given in English. He started to hand
the letter to Hassan, then remembered the dragoman could not read. He
puzzled over the Arabic in the letterhead, realizing the address must be
given there. If he could identify the numbers ... there, he recognized
one. Both boys had spent some time studying the telephone dial at the
project, on which the numbers were in Arabic. It was easy to identify
them, and Rick had spotted the five, a figure like a tiny heart, upside
down.

"I think I have it," he said. "Let's see. Arabic reads from right to
left, instead of the way we write. That makes this number ... hmmmm ...
a heart, a dot, and two sevens backward with one squiggle in the upper
line. The heart is a five, the dot a zero, and backward sevens with one
squiggle are twos. So the number is 5022. Right?"

"That's the way I remember it," Scotty said. "So that's the number.
_Enshallah._"

Hassan started laughing in the front seat. "Now you speak Arabic? You
must say _a'eraf shwayet 'arabi_."

"What does that mean?" Scotty demanded.

"It mean 'I know some Arabic'"

The boys laughed with him. In a few moments Hassan swung the little car
to the curb and pointed to the nearest building. "There 5022."

Rick started to get out, then he asked curiously, "How do you know,
Hassan? I thought you couldn't read."

"No can read words. Read numbers plenty good. Could not take people to
places if could not read numbers."

That made sense, Rick thought.

Scotty let out a sudden exclamation. "Hey, this is a barbershop, and
it's closed for the night."

Rick looked, then switched on the dome light. He compared the letterhead
numb