From the epoch when the Ottomans made durable conquests in the Greek empire, Asia each spring threw new hordes into Europe, until the time when the successors of Orkhan had extended their domination from the shores of the Sea of Marmora to those of the Danube. The conquest of Gallipoli, which had opened the gate of the Greek empire and the whole of the European continent to the Ottomans, was announced by "letters of victory" to the neighboring princes of Orkhan, whose father had divided with Osman the heritage of the Seljukian sultans. The use of these "letters of victory" has been preserved to this day in Turkey, and their style, already so pompous in the days of Orkhan, has become so proudly emphatic that this kind of document to-day is not the least curious of those which belong to the annals of the Turkish nation. Orkhan left to his son, Suleiman Pacha, and Hadji-Ilbeki the charge of preserving the conquests made in Europe; Suleiman established his residence at Gallipoli, and Ilbeki at Konour. The first overran the country as far as Demitoka; the second as far as Tschorli and Hireboli. Adjebeg received in fief the valley which still bears his name. But Suleiman enjoyed for only a few years the fruits of his conquests. One day while hunting wild geese between Boulair and Sidi-Kawak, that is to say near the palatine of the Cid, and following at a gallop the flight of his falcon, he fell so violently from his horse (1359) as to be instantly killed. His body was deposited, not in the mausoleum of the Osman family at Prusa, where he had caused a mosque to be erected in the quarter of the confectioners, but near the mosque of Boulair, also founded by him. Orkhan, to perpetuate the exploits of his son, caused a tomb to be built to his memory on the shore of the Hellespont, the only one which, during more than a century, was erected in memory of an Ottoman prince on Greek soil. Of all the sepulchres of Turkish heroes which the national historians mention with holy respect, that of the founder of the Ottoman power in Europe is the most venerated and the most frequented by pilgrims. It is still to be seen to the north of the embouchure of the Hellespont.