Somerville and I used frequently to spend the evening with Captain and Mrs. Kater. Dr. Wollaston, Dr. Young, and others were generally of the party; sometimes we had music, for Captain and Mrs. Kater sang very prettily. All kinds of scientific subjects were discussed, experiments tried and astronomical observations made in a little garden in front of the house. One evening we had been trying the power of a telescope in separating double stars till about two in the morning; on our way home we saw a light in Dr. Young's window, and when Somerville rang the bell, down came the doctor himself in his dressing-gown, and said, "Come in; I have something curious to show you." Astronomical signs are frequently found on ancient Egyptian monuments, and were supposed to have been employed by the priests to record dates. Now Dr. Young had received a papyrus from Egypt, sent to him by Mr. Salt, who had found it in a mummy-case; and that very evening he had proved it to be a horoscope of the age of the Ptolemies, and had determined the date from the configuration of the heavens at the time of its construction. Dr. Young had already made himself famous by the interpretation of hieroglyphic characters on a stone which had been brought to the British Museum from Rosetta in Egypt. On that stone there is an inscription in Hieroglyphics, the sacred symbolic language of the early Egyptians; another in the Enchorial or spoken language of that most ancient people, and a mutilated inscription in Greek. By the aid of some fragments of papyri Dr. Young discovered that the Enchorial language is alphabetical, and that nine of its letters correspond with ours; moreover, he discovered such a relation between the Enchorial and the hieroglyphic inscription that he interpreted the latter and published his discoveries in the years 1815 and 1816.