"The photographs," he continued, as if lecturing, "were of characters projected by the sphere when placed before a focused light. The sphere was transparent, you see, imbedded with dark microscopic specks. By moving the sphere a certain distance each time, there was a total projection of three hundred and sixty different characters in eighteen different orderings. Or nineteen different orderings if you count one which was a list of all the characters." I made a mental note of the numbers. I felt they were significant. "As I said," he continued, "I obtained the photographs of the characters. Very strange shapes, totally unlike the characters of Oriental languages, but yet that is the closest way to describe them." He jerked forward in his chair, "Except, of course, ostensively." "Later," I said. I wanted to get through the preliminaries first. There would be time later to see the photographs. * * * * * "The characters projected by the sphere," he said, "weren't like the characters of any known language." He paused dramatically. "There was reason to believe they had origin in an unknown culture. A culture more scientifically advanced than our own." "And the reasons for this supposition?" I asked. "The material ... the material of the sphere. It could only be roughly classified as _ferro-plastic_. Totally unknown, amazing imperviousness. A synthetic material, hardly the product of a former culture." "From Mars?" I said, smiling. "There were all kinds of conjectures, but, of course, the important thing was to see if the projection of characters was a message. The message, if any, would mean more than any conjecture." "You translated it?" _He polished the coin on his jacket. "You won't dare believe it," he said sharply._ He cleared his throat and stiffened into a more rigid posture. "It wasn't exactly translation. You see, _to us_ none of the characters had designation. They were just characters." "So it was a problem of decoding?" I asked. "As it turned out, no. Decoding is dependent on knowledge of language characteristics--characteristics of known languages. Decoding was tried, but without success. No, what we had to find was a key to the language." "You mean like the Rune Stone?" "More or less. In principle, we needed a picture of a cow, and a sign of meaning indicating one of the characters. "For me, there was no possibility of finding similarities between the characters and characters of other languages--that would require tremendous linguistic knowledge and library facilities. Nor could I use a decoding approach--that would require special knowledge of techniques and access to electronic computers and other mechanical aids. No, I had to work on the assumption that the key to the sphere was implicit in the sphere." "You hoped to find the key to the language in the language itself?"