In The Adventure of the Luminous Clay, Sir James Randal was a research specialist in atomic energy. At a meeting of the Royal Society, he had heard a paper read by Professor Lovejoy describing his discovery of gulls which laid luminous eggs with a bluish tinge. Realizing that the bluish tinge could indicate the presence of blue clay, an expensive substance vital to research in atomic energy, Randal brought Lovejoy to see Air Commodore Raymond with a request that someone be sent to the remote Pacific islet where the gulls lived in order to retrieve a container of the expensive substance.

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