In the stele of Rosetta and on an obelisk brought to England there are two identical cartouches. The English doctor Thomas Yung (1773 - 1829), an ingenious englishman who got interested in Egyptology casually, realized that they represented sounds, not symbols, and that the cartouches had kings' names. According to the Greek part of the Stele of Rosetta, in 1818 Yung deciphered the names of Tolomeo and Cleopatra. The first letter of the first cartouche was exactly the same as the fifth letter in the second: it was the letter "p", and so the rectangle corresponded to the sound "p". In the same way the third letter in the first cartouche was the same as the fourth letter in the second, the letter "o". He was slowly able to read in the first cartouche the name

 Tolomeo e Cleopatra Yung, expert of natural sciences, an ingenious man, but unprepared in philology, using comparison and clever itnerpolation, was able to decipher only a few words. Unfortunately he had to abandon his researches in Egyptology for the lack of funds, but his analysis on the letters of the Stele of Rosetta was completely right for many years before the pubblication of Champollion's grammar.