The Turks are remarkable for half-measures. In the mathematical and marine school, a substantial and commodious building, they are furnished with every thing—except instruments and books; the class small or none; but the end of the institution is considered as completely answered, as there are professors who meet and smoke their pipes together. There are several _Kuttub-chans_, or public libraries, among which the principal are those of St. Sophia and the Solimanié Jamasy; but none so elegant as that built by Raghib Pasha, formerly Grand Wizîr. The magnificent institutions of this great man being envied by the Sultan of the day, his head was the forfeit of his virtues. This library is an insulated building, in the middle of a square court, consisting entirely of marble, and very neat and convenient. A large tomb, decorated with gilt brass, in which Raghib Pasha is buried, forms the centre of the library. Around are numerous books, on all subjects, chiefly as usual theology; convenient seats and elegant carpets and cushions for the readers. A librarian constantly attends. The light is well disposed, and the place perfectly quiet; so that I have no where seen a building or institution more complete of the kind. The apartment is raised above the ground by seven or eight easy steps. Fronting the street there is a school, founded by the same Pasha. It is a convenient room, of thirty-five feet long and proportionate width, where about an hundred boys are taught to read and write, and the more simple part of their theology. There is only one class, which attends every day for two hours in the morning and two in the afternoon. I met with a Mohammedan, a native of _Balk_, who understood the first six books of Euclid. A young Englishman, who has embraced Islamism, and is lately established at Constantinople, had translated Euclid into Turkish, and published an astronomical ephemeris. Having received some encouragement, he was proceeding to read lectures on mathematical subjects. Many scribes are found here who write elegantly and correctly. The national taste does not seem rapidly to improve. One of the Sultanas, sisters of the monarch, has not long since built a villa on the Bosphorus, half in the European style, half in the Chinese. There is a considerable market for books, containing many shops, well supplied. Strata of coals are found at about four hours distance on the European side. An officer in the service of the Porte informed me that he had at first obtained the exclusive right of working them. He sent them to the Crimea. Since that time better coals having been found in that country, and the right of working them having been soon afterwards taken from him, the mine was neglected, and then discontinued. It was difficult to work on account of the sandy soil which fell in. He said he could sell them at Constantinople for a para the oke.