National Geographic : 1915 May
"CUT-THROAT CASTLE," BUILT BY MOHAMMED II IN 1452, ON THE EUROPEAN SHORE OF THE BOSPHORUS, AS A BASE FOR HIS OPERATIONS AGAINST CONSTANTINOPLE "And those landlocked waters, at once a barrier and a highway between East and West, have been from the earliest times, as they happen again to be today, the theater of epic events" (see page 435). Photos by H. G . Dwight A VIEW OF THE BOSPHORUS AT THE NARROWEST PART On the farther shore, in the center, may be discerned the castle built by Bajezid I (page 448). The Bosphorus at this point is about 550 yards wide. The current through the straits here is always very swift; in fact, so strong that it is impossible to row against it. "The Bosphorus never feels the influence of tides. From the vast bosom of the Mediter ranean the evaporation is enormous. The contribution of its rivers, moreover, is small in comparison with that of the mighty streams which deluge the Black Sea. So in the Bosphorus the flow southward is constant. The current sometimes attains a velocity of four and even five miles an hour. So violently does it rush by the promontories of Arnaoutkeui and Rumeli Hissar that the strongest boatmen are unable to row against it. This has given rise to a peculiar guild, or craft-the yedekdjis-whose whole business consists in towing vessels up the stream." -EDWIN A. GROSVENOR.