London, Sept. 19. - Cunard Line SS Aurania. Capt. Walker, from New-York Sept. 12 for Liverpool, arr. at Queens-town at 11.15 P.M. to day. SS La Flandre, (Dutch,) Capt. Smick, from Antwerp Sept. 16 for New-York, collided with and sunk the schooner Emil E. Hessenmuller (Germ.) off Start Point in a thick fog. The steamship was undamaged and proceeded after ha-ving placed the schooner's crew, whom she had rescued, in charge of the German Consul at Plymouth.