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had seen a shoal of fish of different colors and shapes. He thought
that the wonderful colors of the fish and their extraordinary char-
acteristics were very fine proofs of Allah's supreme creation. His
clever little friend the fish continued to give him information about
itself:
"Did you know, little friend, the bodies of most of us fish are cov-
ered with a very strong skin?"
Omar thought for a moment or two: "Yes, you have a scaly skin,
I've seen that. But it doesn't look very thick."
"This skin is made up of an upper and lower layer," explained
the fish. "Inside the upper skin are glands which produce a mate-
